Twitch refuses logging in - browser not supported

[sotesz]

Greetings. For some time, when I try to log in on twitch.tv, I get a reply on the page that my browser is not supported, and thus no logging in for me in my alternative browser.
Anyone know a workaround for this perhaps?

(Videos seem to play without issue (besides trash performance, usual of twitch) without logging in by the way.)

[moonbat]

Why do you types ignore the troubleshooting information template when posting and act as though PM developers are mind readers to diagnose it from your 2 line description?

[sotesz]

I did ignore the template because I was thinking that this is not defective behaviour, but Twitch only accepting the mainstream browsers.
I was hoping to get a tip at a workaround for this, or at least get to know if other people do not have the same happening to them, and there is a problem on my end.
Also, the template says to include any relevant information, and I did not think there was any for the aforementioned reason, also did not hope to even be able to determine what could be relevant.
And lastly I could not phatom that anyone could have use of the template text on its own - so I removed it all for now.
Sorry if I presumed incorrectly, that this is the normal behaviour in Pale Moon on that site as of now. By the way:

Browser: Pale Moon 33.9.0.1 64bit SSE version.
OS: Windows 7 64bit
No addons enabled, new private window.
Update - see error console output below:
All media formats except AV1 were enabled, with that enabled and browser restarted, the line about no codec was not in the Error Console, but the login is still the same failure, and videos were playing already without AV1 enabled.

Here is what I omitted, and the asked code - all from the Developer Web Console as I don't know what is relevant from there, and lines from the Error Consoler, where I could not find a way to select all, and tried to the more unique instances of the messages.

The template text

Please always mention the name/domain of the website in question in your topic title.

Please try to include any relevant output from the Toolkit Error Console or the Developer Tools Web Console using the following procedure:

1) Clear any current output
2) Navigate or refresh the page in question
3) Copy and paste Errors or seemingly relevant Warnings into a single [ code ] block.

Code: Select all

**PASTE CONSOLE OUTPUT HERE**

Developer Web Console output after login refusal:

Code: Select all

"?? React Router Future Flag Warning: React Router will begin wrapping state updates in `React.startTransition` in v7. You can use the `v7_startTransition` future flag to opt-in early. For more information, see https://reactrouter.com/v6/upgrading/future#v7_starttransition."  
70224-16ca545dd7ff4bbac9ff.js:1:395127
"?? React Router Future Flag Warning: Relative route resolution within Splat routes is changing in v7. You can use the `v7_relativeSplatPath` future flag to opt-in early. For more information, see https://reactrouter.com/v6/upgrading/future#v7_relativesplatpath."  
70224-16ca545dd7ff4bbac9ff.js:1:395127
09:17:45 - [VideoTransformer] WebGPU unavailable  
player-core-variant-a-9fb70275b2cd96237675.js:1:74650
Cannot play media. No decoders for requested formats: video/mp4; codecs="hvc1.1.40000000.L60.80.0.0.0.0.0", video/mp4; codecs="av01.0.05M.08"  
www.twitch.tv
Amazon IVS Player SDK 1.45.0-rc.4  
amazon-ivs-wasmworker.min-ff3003c95400d3e3597c.js:1:49847
09:17:55 - [VideoTransformer] WebGPU unavailable  
player-core-variant-a-9fb70275b2cd96237675.js:1:74650
Amazon IVS Player SDK 1.45.0-rc.4  
amazon-ivs-wasmworker.min-ff3003c95400d3e3597c.js:1:49847
8:17:57 [ERROR] Unhandled promise rejection. DOMException [InvalidStateError: "An attempt was made to use an object that is not, or is no longer, usable"
code: 11
nsresult: 0x8053000b
location: https://assets.twitch.tv/assets/player-core-variant-a-9fb70275b2cd96237675.js:1]  
89612-ed895c0ee84186b9620c.js:1:495503
MediaCapabilities is not supported  
amazon-ivs-wasmworker.min-ff3003c95400d3e3597c.js:1:100426
MediaCapabilities found Array [ Object, Object, Object, Object, Object, Object ]  
amazon-ivs-wasmworker.min-ff3003c95400d3e3597c.js:1:107557
8:18:01 [ERROR] Unhandled promise rejection. DOMException [InvalidStateError: "An attempt was made to use an object that is not, or is no longer, usable"
code: 11
nsresult: 0x8053000b
location: https://assets.twitch.tv/assets/player-core-variant-a-9fb70275b2cd96237675.js:1]  
89612-ed895c0ee84186b9620c.js:1:495503
8:18:02 [ERROR] Unhandled promise rejection. DOMException [InvalidStateError: "An attempt was made to use an object that is not, or is no longer, usable"
code: 11
nsresult: 0x8053000b
location: https://assets.twitch.tv/assets/player-core-variant-a-9fb70275b2cd96237675.js:1]  
89612-ed895c0ee84186b9620c.js:1:495503

Error Console output after login refusal:
Many variations of these two lines:

Code: Select all

Security Error: Content at https://www.twitch.tv/ may not load data from https://assets.twitch.tv/assets/89699-38b637a33d9508895452.js.
Security Error: Content at https://www.twitch.tv/ may not load data from https://video-edge-1c9b18.pdx01.abs.hls.ttvnw.net/v1/segment/CoCSV-oY-QdEo1QA5h68-TK2tinywcE9f1CCHBTqeBWlN7Cnj4ywbiqR9cgCt3uImyNRi7oZonCbtASAjzJcwZjBr9Wcp82abFnvWBQIHe25v1dxGU88Xpk5xDMiOk_Wquxz7un9Shfhx62LbWZ_dBms5eepCldjrd6_vQFgVANC3QxP1qxgWmMgyZhIubwcWsovgtOewXQTMek52SQipRpdc3byieqsVoAE9kKclyrzZZLElhd1SyHPYu3Va6tzc667LoyMDQyfwhIUtFzhkjQnWf5z0tcfhxKpzA_izzXKg-FZfRsPkGb0DGY8x8uaYHAc9napIt_sJOKqxKcxDKGV-I6SeFCDOVpe5GhcUFVs8MqVwxXvtvcn60XA8fn4oNRBSQHFbiqxskVha2cK678tJrA-Fp7k4tK8YDsZDL-7rd5nZwITHyha2yegP4Bo0T-gNvQ-M-siVPbAuF8tGVXi28emnIRzGT0LURiv1noOCgR4UwS2Zi6hOvaAQXw02mhg15BhqIa0U_NQMVOrpQDUs7NkXlk3-uTZIdEAvyfKSEnDc9t8KtdFcBp-_lakQXCSs7jQ_j8eqhkCF-W0FJIqEeHHsBIcKLGkuI6kvNih3ihNqy0VP9EZs2k2kaDJqpixtSRQ1qzrpJ6cSkfOexVqdSIPotkCf2IKMu820lhDjdWmbmcQtBXJyLo71ySA0VbQ3A7ycyusF8RaygwNCMuEjlzdDDoIW3_DAQJ9fV8gC6MJrzn5dEIXKKUJdDqVMUD343gDP70N9nnTE.ts.

Single instances of these two lines:

Code: Select all

Timestamp: 2025.09.27. 9:17:05
Warning: Cannot play media. No decoders for requested formats: video/mp4; codecs="hvc1.1.40000000.L60.80.0.0.0.0.0", video/mp4; codecs="av01.0.05M.08"
Source File: https://www.twitch.tv/
Line: 0
Timestamp: 2025.09.27. 9:18:06
Warning: Key event not available on some keyboard layouts: key=“i” modifiers=“accel,alt,shift” id=“key_browserToolbox”
Source File: chrome://browser/content/browser.xul
Line: 0

There is a link to see the supported browsers by the way, which brings up a blank page. If it is of interest here is the same on that page:
https://help.twitch.tv/s/article/suppor ... uage=en_US

Developer Web Console output on support article:

Code: Select all

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://brand.twitch.tv/assets/fonts/roobert-regular.otf. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).  
(unknown)
downloadable font: download failed (font-family: "roobert" style:normal weight:normal stretch:normal src index:1): bad URI or cross-site access not allowed source: https://brand.twitch.tv/assets/fonts/roobert-regular.otf  
supported-browsers:133:12
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://brand.twitch.tv/assets/fonts/roobert-regular.ttf. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).  
(unknown)
downloadable font: download failed (font-family: "roobert" style:normal weight:normal stretch:normal src index:2): bad URI or cross-site access not allowed source: https://brand.twitch.tv/assets/fonts/roobert-regular.ttf  
supported-browsers:133:12
"TypeError: header is null
throws at https://help.twitch.tv/s/article/supported-browsers?language=en_US:9:9" TypeError: header is null
Stack trace:
@https://help.twitch.tv/s/article/supported-browsers?language=en_US:9:9
  
aura_prod.js:1127:188

Error Console on support article seems to have more like these:

Code: Select all

Security Error: Content at https://help.twitch.tv/s/article/supported-browsers?language=en_US may not load data from https://analytics.m7g.twitch.tv/ebc8211ba5a991f7bfa0/.

[moonbat]

I did ignore the template because I was thinking that this is not defective behaviour, but Twitch only accepting the mainstream browsers.

The template asks for both your browser troubleshooting information complete with instructions on how to find it, as well as whatever console errors showed up for the website. For best results, you should keep a separate unmodified profile for testing sites to rule out any problems due to your extensions or changed preferences (open about:profiles in a new tab, create a new profile from there, launch it in a separate window and run your website there to see if it works. A private window isn't the same thing)
Sometimes it's the website using an unsupported API. Sometimes it's an extension or setting that causes the problem. But without the requested info no one can help.

[sotesz]

Again, I did not ask for any debugging. In my experience Twitch just straight out refuses to accept this browser.
- I just at least reported that this is the case.
- I asked if someone knows how to work around this - for example someone who has experience in changing browser identification that these sites might sniff out.
- Alternatively, I was hoping to get feedback, that it it not a problem for others. If That was the case, Then it might have been time to go into debugging...

Am I in the wrong topic category? Isn't "Web Compatibility Support" not where it is supposed to be discussed when a site doesn't support Pale Moon?

And the template is misleading if by including any "relevant" information, you mean dump everything if you think nothing is relevant or can not determine.

And I tried a freshly downloaded, freshly installed, freshly started most recent Pale Moon portable, and the behaviour is exactly the same - in my mind, another proof that my addons are irrelevant.
But I might be clueless about this just as much as I am about the topic category, and the meaning of relevant...

[Moonchild]

I'm not entirely sure why twitch.tv is arbitrarily refusing log ins from Pale Moon now. Never an issue before (even 2FA worked fine). My current browser session is logged in* and the site works just fine, so this is explicitly a check against Pale Moon and arbitrarily discriminating against us. If you are a twitch user, I'd make a fuss about this with Twitch. I'll file a ticket myself with them, as well.

*actually... it was logged in until I tried logging in from a portable to test and that failed attempt logged all my other Pale Moon (but not Edge) sessions out... WTF .

[sotesz]

This is for moonbat and anyone who is interested in the Troubleshooting Info.

Wait something just rang a bell. Isn't this template you are talking about the text that gets filled in automatically when you begin posting a new topic here? Which I quoted fist in my first reply, and the content of which is included in the red text above.
That one isn't asking for the Troubleshooting Information, and has no instructions at all how you find and include the console outputs which it actually mentions.
The bell was about me remembering that in the past I did include Troubleshooting Information with a topic about error, but I can't find reference to that now. (Maybe it was from someone's post at that time too.)
In any case here is the Troubleshooting Information from the system that the console outputs are from:

Code: Select all

Application Basics
------------------

Name: Pale Moon
Version: 33.9.0.1 (64-bit)
Build ID: 20250924135555
Update Channel: release
User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:128.0) Gecko/20100101 Goanna/6.8 Firefox/128.0 PaleMoon/33.9.0.1
OS: Windows_NT 6.1
CPU Capabilities: SSE2
Safe Mode: false

Extensions
----------

Name: uBlock Origin
Version: 1.16.6.1
Enabled: false
ID: uBlock0@raymondhill.net

Name: ?Matrix
Version: 5.1.1
Enabled: false
ID: eMatrix@vannilla.org

Graphics
--------

Features
Compositing: Direct3D 11
GPU Accelerated Windows: 2/2 Direct3D 11 (OMTC)
Asynchronous Pan/Zoom: none
WebGL 1 Driver WSI Info: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000c5d4) EGL_VERSION: 1.4 (ANGLE 2.1.0.) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses
WebGL 1 Driver Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics 610 Direct3D11 vs_5_0 ps_5_0)
WebGL 1 Driver Version: OpenGL ES 2.0 (ANGLE 2.1.0.)
WebGL 1 Driver Extensions: GL_OES_element_index_uint GL_OES_packed_depth_stencil GL_OES_get_program_binary GL_OES_rgb8_rgba8 GL_EXT_texture_format_BGRA8888 GL_EXT_read_format_bgra GL_NV_pixel_buffer_object GL_OES_mapbuffer GL_EXT_map_buffer_range GL_EXT_color_buffer_half_float GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_float GL_OES_texture_float_linear GL_EXT_texture_rg GL_EXT_texture_compression_dxt1 GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_OES_compressed_ETC1_RGB8_texture GL_EXT_sRGB GL_ANGLE_depth_texture GL_OES_depth32 GL_EXT_texture_storage GL_OES_texture_npot GL_EXT_draw_buffers GL_EXT_texture_filter_anisotropic GL_EXT_occlusion_query_boolean GL_NV_fence GL_EXT_disjoint_timer_query GL_EXT_robustness GL_EXT_blend_minmax GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_pack_reverse_row_order GL_OES_standard_derivatives GL_EXT_shader_texture_lod GL_EXT_frag_depth GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_EXT_discard_framebuffer GL_EXT_debug_marker GL_OES_EGL_image GL_OES_EGL_image_external GL_NV_EGL_stream_consumer_external GL_EXT_unpack_subimage GL_NV_pack_subimage GL_OES_vertex_array_object GL_KHR_debug GL_ANGLE_lossy_etc_decode GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_sync_query GL_CHROMIUM_copy_texture
WebGL 1 Extensions: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_frag_depth EXT_shader_texture_lod EXT_texture_filter_anisotropic EXT_disjoint_timer_query MOZ_debug_get OES_element_index_uint OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_etc1 WEBGL_compressed_texture_s3tc WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context MOZ_WEBGL_lose_context MOZ_WEBGL_compressed_texture_s3tc MOZ_WEBGL_depth_texture
WebGL 2 Driver WSI Info: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000c5d4) EGL_VERSION: 1.4 (ANGLE 2.1.0.) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses
WebGL 2 Driver Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics 610 Direct3D11 vs_5_0 ps_5_0)
WebGL 2 Driver Version: OpenGL ES 3.0 (ANGLE 2.1.0.)
WebGL 2 Driver Extensions: GL_OES_element_index_uint GL_OES_packed_depth_stencil GL_OES_get_program_binary GL_OES_rgb8_rgba8 GL_EXT_texture_format_BGRA8888 GL_EXT_read_format_bgra GL_NV_pixel_buffer_object GL_OES_mapbuffer GL_EXT_map_buffer_range GL_EXT_color_buffer_half_float GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_float GL_OES_texture_float_linear GL_EXT_texture_rg GL_EXT_texture_compression_dxt1 GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_OES_compressed_ETC1_RGB8_texture GL_EXT_sRGB GL_ANGLE_depth_texture GL_OES_depth32 GL_EXT_texture_storage GL_OES_texture_npot GL_EXT_draw_buffers GL_EXT_texture_filter_anisotropic GL_EXT_occlusion_query_boolean GL_NV_fence GL_EXT_disjoint_timer_query GL_EXT_robustness GL_EXT_blend_minmax GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_pack_reverse_row_order GL_OES_standard_derivatives GL_EXT_shader_texture_lod GL_EXT_frag_depth GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_EXT_discard_framebuffer GL_EXT_debug_marker GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_image_external_essl3 GL_NV_EGL_stream_consumer_external GL_EXT_unpack_subimage GL_NV_pack_subimage GL_EXT_color_buffer_float GL_OES_vertex_array_object GL_KHR_debug GL_ANGLE_lossy_etc_decode GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_sync_query GL_CHROMIUM_copy_texture GL_EXT_texture_norm16
WebGL 2 Extensions: EXT_color_buffer_float EXT_texture_filter_anisotropic EXT_disjoint_timer_query MOZ_debug_get OES_texture_float_linear WEBGL_compressed_texture_etc WEBGL_compressed_texture_etc1 WEBGL_compressed_texture_s3tc WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context MOZ_WEBGL_lose_context MOZ_WEBGL_compressed_texture_s3tc
Hardware H264 Decoding: Yes; Using D3D9 API
Audio Backend: wasapi
Direct2D: true
DirectWrite: true (6.2.9200.21976)
GPU #1
Active: Yes
Description: Intel(R) HD Graphics 610
Vendor ID: 0x8086
Device ID: 0x5902
Driver Version: 21.20.16.4508
Driver Date: 8-27-2016
Drivers: igdumdim64 igd10iumd64 igd10iumd64 igdumdim32 igd10iumd32 igd10iumd32
Subsys ID: 7a701462
RAM: Unknown

Diagnostics
AzureCanvasBackend: direct2d 1.1
AzureContentBackend: direct2d 1.1
AzureFallbackCanvasBackend: cairo





Important Modified Preferences
------------------------------

accessibility.typeaheadfind.flashBar: 0
browser.cache.disk.capacity: 358400
browser.cache.disk.parent_directory: Q:\temp\Ishar\PaleMoon
browser.cache.disk.smart_size.first_run: false
browser.cache.disk.smart_size.use_old_max: false
browser.download.importedFromSqlite: true
browser.places.smartBookmarksVersion: 4
browser.startup.homepage_override.buildID: 20250924135555
browser.startup.homepage_override.mstone: 6.8.0
extensions.lastAppVersion: 33.9.0.1
general.useragent.updates.lastupdated: 1758991871880
gfx.crash-guard.d3d11layers.appVersion: 33.9.0.1
gfx.crash-guard.d3d11layers.deviceID: 0x5902
gfx.crash-guard.d3d11layers.driverVersion: 21.20.16.4508
gfx.crash-guard.d3d11layers.feature-d2d: true
gfx.crash-guard.d3d11layers.feature-d3d11: true
gfx.crash-guard.status.d3d11layers: 2
gfx.crash-guard.status.d3d9video: 2
media.av1.enabled: true
media.benchmark.vp9.fps: 188
media.benchmark.vp9.versioncheck: 3
media.hardware-video-decoding.failed: false
network.cookie.prefsMigrated: true
network.dns.disablePrefetch: true
places.database.lastMaintenance: 1758472476
places.history.expiration.transient_current_max_pages: 156171
privacy.sanitize.migrateFx3Prefs: true
storage.vacuum.last.index: 1
storage.vacuum.last.places.sqlite: 1757185859

Important Locked Preferences
----------------------------

Places Database
---------------

JavaScript
----------

Incremental GC: true

Accessibility
-------------

Activated: false
Prevent Accessibility: 1

Library Versions
----------------

NSPR
Expected minimum version: 4.35
Version in use: 4.35

NSS
Expected minimum version: 3.90.7.2
Version in use: 3.90.7.2

NSSSMIME
Expected minimum version: 3.90.7.2
Version in use: 3.90.7.2

NSSSSL
Expected minimum version: 3.90.7.2
Version in use: 3.90.7.2

NSSUTIL
Expected minimum version: 3.90.7.1
Version in use: 3.90.7.1

And from the fresh portable version I mentioned last, just in case...:

Code: Select all

Application Basics
------------------

Name: Pale Moon
Version: 33.9.0.1 (64-bit)
Build ID: 20250924083854
Update Channel: release
User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:128.0) Gecko/20100101 Goanna/6.8 Firefox/128.0 PaleMoon/33.9.0.1
OS: Windows_NT 6.1
CPU Capabilities: SSE2 AVX AVX2
Safe Mode: false

Extensions
----------

Graphics
--------

Features
Compositing: Direct3D 11
GPU Accelerated Windows: 1/1 Direct3D 11 (OMTC)
Asynchronous Pan/Zoom: none
WebGL 1 Driver WSI Info: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000a1ff) EGL_VERSION: 1.4 (ANGLE 2.1.0.) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses
WebGL 1 Driver Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GT 1030 Direct3D11 vs_5_0 ps_5_0)
WebGL 1 Driver Version: OpenGL ES 2.0 (ANGLE 2.1.0.)
WebGL 1 Driver Extensions: GL_OES_element_index_uint GL_OES_packed_depth_stencil GL_OES_get_program_binary GL_OES_rgb8_rgba8 GL_EXT_texture_format_BGRA8888 GL_EXT_read_format_bgra GL_NV_pixel_buffer_object GL_OES_mapbuffer GL_EXT_map_buffer_range GL_EXT_color_buffer_half_float GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_float GL_OES_texture_float_linear GL_EXT_texture_rg GL_EXT_texture_compression_dxt1 GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_OES_compressed_ETC1_RGB8_texture GL_EXT_sRGB GL_ANGLE_depth_texture GL_OES_depth32 GL_EXT_texture_storage GL_OES_texture_npot GL_EXT_draw_buffers GL_EXT_texture_filter_anisotropic GL_EXT_occlusion_query_boolean GL_NV_fence GL_EXT_disjoint_timer_query GL_EXT_robustness GL_EXT_blend_minmax GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_pack_reverse_row_order GL_OES_standard_derivatives GL_EXT_shader_texture_lod GL_EXT_frag_depth GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_EXT_discard_framebuffer GL_EXT_debug_marker GL_OES_EGL_image GL_OES_EGL_image_external GL_NV_EGL_stream_consumer_external GL_EXT_unpack_subimage GL_NV_pack_subimage GL_OES_vertex_array_object GL_KHR_debug GL_ANGLE_lossy_etc_decode GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_sync_query GL_CHROMIUM_copy_texture
WebGL 1 Extensions: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_frag_depth EXT_shader_texture_lod EXT_texture_filter_anisotropic EXT_disjoint_timer_query MOZ_debug_get OES_element_index_uint OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_etc1 WEBGL_compressed_texture_s3tc WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context MOZ_WEBGL_lose_context MOZ_WEBGL_compressed_texture_s3tc MOZ_WEBGL_depth_texture
WebGL 2 Driver WSI Info: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000a1ff) EGL_VERSION: 1.4 (ANGLE 2.1.0.) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses
WebGL 2 Driver Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GT 1030 Direct3D11 vs_5_0 ps_5_0)
WebGL 2 Driver Version: OpenGL ES 3.0 (ANGLE 2.1.0.)
WebGL 2 Driver Extensions: GL_OES_element_index_uint GL_OES_packed_depth_stencil GL_OES_get_program_binary GL_OES_rgb8_rgba8 GL_EXT_texture_format_BGRA8888 GL_EXT_read_format_bgra GL_NV_pixel_buffer_object GL_OES_mapbuffer GL_EXT_map_buffer_range GL_EXT_color_buffer_half_float GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_float GL_OES_texture_float_linear GL_EXT_texture_rg GL_EXT_texture_compression_dxt1 GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_OES_compressed_ETC1_RGB8_texture GL_EXT_sRGB GL_ANGLE_depth_texture GL_OES_depth32 GL_EXT_texture_storage GL_OES_texture_npot GL_EXT_draw_buffers GL_EXT_texture_filter_anisotropic GL_EXT_occlusion_query_boolean GL_NV_fence GL_EXT_disjoint_timer_query GL_EXT_robustness GL_EXT_blend_minmax GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_pack_reverse_row_order GL_OES_standard_derivatives GL_EXT_shader_texture_lod GL_EXT_frag_depth GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_EXT_discard_framebuffer GL_EXT_debug_marker GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_image_external_essl3 GL_NV_EGL_stream_consumer_external GL_EXT_unpack_subimage GL_NV_pack_subimage GL_EXT_color_buffer_float GL_OES_vertex_array_object GL_KHR_debug GL_ANGLE_lossy_etc_decode GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_sync_query GL_CHROMIUM_copy_texture GL_EXT_texture_norm16
WebGL 2 Extensions: EXT_color_buffer_float EXT_texture_filter_anisotropic EXT_disjoint_timer_query MOZ_debug_get OES_texture_float_linear WEBGL_compressed_texture_etc WEBGL_compressed_texture_etc1 WEBGL_compressed_texture_s3tc WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context MOZ_WEBGL_lose_context MOZ_WEBGL_compressed_texture_s3tc
Hardware H264 Decoding: Yes; Using D3D9 API
Audio Backend: wasapi
Direct2D: true
DirectWrite: true (6.2.9200.23480)
GPU #1
Active: Yes
Description: NVIDIA GeForce GT 1030
Vendor ID: 0x10de
Device ID: 0x1d01
Driver Version: 30.0.14.7411
Driver Date: 11-28-2022
Drivers: nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um
Subsys ID: 00000000
RAM: 2048

Diagnostics
AzureCanvasBackend: direct2d 1.1
AzureContentBackend: direct2d 1.1
AzureFallbackCanvasBackend: cairo





Important Modified Preferences
------------------------------

browser.cache.disk.capacity: 358400
browser.cache.disk.enable: false
browser.cache.disk.parent_directory: Q:\temp\Ishar\pmp\User\Palemoon\Profiles\Default
browser.cache.disk.smart_size.first_run: false
browser.download.importedFromSqlite: true
browser.download.manager.retention: 1
browser.download.useDownloadDir: false
browser.places.smartBookmarksVersion: 4
browser.startup.homepage_override.buildID: 20250924083854
browser.startup.homepage_override.mstone: 6.8.0
extensions.lastAppVersion: 33.9.0.1
general.useragent.updates.lastupdated: 1759053812598
gfx.crash-guard.d3d11layers.appVersion: 33.9.0.1
gfx.crash-guard.d3d11layers.deviceID: 0x1d01
gfx.crash-guard.d3d11layers.driverVersion: 30.0.14.7411
gfx.crash-guard.d3d11layers.feature-d2d: true
gfx.crash-guard.d3d11layers.feature-d3d11: true
gfx.crash-guard.status.d3d11layers: 2
gfx.crash-guard.status.d3d9video: 2
network.cookie.prefsMigrated: true
places.database.lastMaintenance: 1759054276
places.history.expiration.transient_current_max_pages: 122334
plugin.expose_full_path: true
privacy.sanitize.migrateFx3Prefs: true
storage.vacuum.last.index: 0
storage.vacuum.last.places.sqlite: 1759054276

user.js Preferences
-------------------

Your profile folder contains a user.js file, which includes preferences that were not created by Pale Moon.

Important Locked Preferences
----------------------------

Places Database
---------------

JavaScript
----------

Incremental GC: true

Accessibility
-------------

Activated: false
Prevent Accessibility: 1

Library Versions
----------------

NSPR
Expected minimum version: 4.35
Version in use: 4.35

NSS
Expected minimum version: 3.90.7.2
Version in use: 3.90.7.2

NSSSMIME
Expected minimum version: 3.90.7.2
Version in use: 3.90.7.2

NSSSSL
Expected minimum version: 3.90.7.2
Version in use: 3.90.7.2

NSSUTIL
Expected minimum version: 3.90.7.1
Version in use: 3.90.7.1

[sotesz]

@Moonchild

Yes where I was logged in, surprisingly it did not matter for me too.
When I read your experience just now, it scared me, that I might have been logged out too where I was before, but checking just now, it looks like I am still in... Who knows for how long though of course. Looks like my experiment with the portable version did not disrupt my very old, closest to main instance of Pale Moon.

By the way the text that is missing on the blank support page about supported browsers:

Supported Browsers
The desktop web browser experience of twitch.tv and supporting sites officially support:

The two latest versions of Google Chrome
The two latest versions of Mozilla Firefox
The most recent version of Microsoft Edge
The most recent version of Apple Safari
The most recent version of Opera and Opera GX

Edit: when I was explicitly testing in the portable version, I did not use my real account for that. Maybe that is why I got spared from logging out.

(Remark for support ticket: for me even account verification is not working for some reason (tried other browsers too iirc), so doubtful if I can even post ticket at all, but it will have to be seen of course...)
Edit2: since as it can be seen from above, Pale Moon is nowhere in the supported browser list, I doubt a support ticket would be fruitful anyway...

(Edit3: If they go the extra mile to log out all the other sessions when they catch you trying to log in on the browser they don't like, that seems another level of "diabolical" ): )

[adoxa]

I tried in Basilisk and got a 5xxx error (unsupported browser); in Firefox it gave a 1xxx error (unknown user); copied that as cURL, also got the 5xxx error. There's curl-impersonate, but without a Windows release I didn't try it.