# KNOWN ISSUE: "E\_INVALIDARG, assert: shader" Crash After Expeditions Update **URL:** \ **Category:** Technical Support\ **Tags:** devpost\ **Created:** [March 17, 2026, 4:41pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595 "2026-03-17T16:41:59Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![FatsharkJulia](https://dub1.discourse-cdn.com/flex013/user_avatar/forums.fatsharkgames.com/fatsharkjulia/32/11653_2.png) [@FatsharkJulia](https://forums.fatsharkgames.com/u/FatsharkJulia)\ **Post date:** [March 17, 2026, 4:41pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/1 "2026-03-17T16:41:59Z")
We’re looking in to a shader-related crash which is occurring for some players after the Expeditions update. The error produced in the crash reporter when this occurs will look similar to: `[Engine Error]: HRESULT: 0x80070057 = E_INVALIDARG, assert: `shader ‘#ID[8860321b]’` Once we have updates to share, we’ll let you know in the comments below and link the posts here. **UPDATE 18/03** > [@KNOWN ISSUE: "E\_INVALIDARG, assert: shader" Crash After Expeditions Update](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/31): > > Hi all, we’ve identified that this crash occurs due to an incompatibility on older versions of Windows 10. We’re working on addressing this in a hotfix, and I’ll update here as soon as I know which version this will be. **UPDATE 19/03** > [@KNOWN ISSUE: "E\_INVALIDARG, assert: shader" Crash After Expeditions Update](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/37): > > A quick update to say this will be resolved in 1.11.2. **UPDATE 26/03** > [@KNOWN ISSUE: "E\_INVALIDARG, assert: shader" Crash After Expeditions Update](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/49): > > 1.11.2 is live, keep us posted! ---
**Author:** ![MRSeemsGood](https://dub1.discourse-cdn.com/flex013/user_avatar/forums.fatsharkgames.com/mrseemsgood/32/112182_2.png) [@MRSeemsGood](https://forums.fatsharkgames.com/u/MRSeemsGood)\ **Post date:** [March 17, 2026, 1:28pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/3 "2026-03-17T13:28:43Z")
### Issue Type (Required): Other ### Issue Description (Required): normal start from launcher and then on second black screen and game crashed ### [PC] Do You Use Mods? (Optional): No, I don’t use mods ### Platform (Required): PC - Steam ### [PC] Crash Report (Optional): ## GUID: 617a39e4-9e35-4ed4-ae69-6536cd5b3f82 Log File: Info Type: [Engine Error]: HRESULT: 0x80070057 = E\_INVALIDARG, assert: `shader '#ID[8860321b]'` At `D:\a\d\e2af82edaa31c93c6098ffbd561125ed\b0be1561439953a6\stingray\runtime\d3d12_render_device\d3d12_debug.cpp:1570` in function `stingray::aftermath::d3d_assert` * * * ---
**Author:** ![FatsharkJulia](https://dub1.discourse-cdn.com/flex013/user_avatar/forums.fatsharkgames.com/fatsharkjulia/32/11653_2.png) [@FatsharkJulia](https://forums.fatsharkgames.com/u/FatsharkJulia)\ **Post date:** [March 17, 2026, 2:19pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/4 "2026-03-17T14:19:50Z")
Sorry to see this. Firstly, do you have any parameters set in Darktide’s ‘Launch Options’ as outlined here?: [Crashing on Launch After Expeditions Update?](https://support.fatshark.se/hc/en-us/articles/34694807089565-Crashing-on-Launch-After-Expeditions-Update) ---
**Author:** ![loonechkaa](https://dub1.discourse-cdn.com/flex013/user_avatar/forums.fatsharkgames.com/loonechkaa/32/112184_2.png) [@loonechkaa](https://forums.fatsharkgames.com/u/loonechkaa)\ **Post date:** [March 17, 2026, 2:32pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/5 "2026-03-17T14:32:55Z")
hello, sorry for jumping in convo, but i have the exact same crash ( crash link –\> crashify://2eba7cec-bc1d-4b0e-b16e-abb35bfb3b77 ), so i checked parameters in steam, and its empty, so problem seems to be not there… i didnt have any side mods for this game, tried to verify file integrity twice, didnt help ---
**Author:** ![FatsharkJulia](https://dub1.discourse-cdn.com/flex013/user_avatar/forums.fatsharkgames.com/fatsharkjulia/32/11653_2.png) [@FatsharkJulia](https://forums.fatsharkgames.com/u/FatsharkJulia)\ **Post date:** [March 17, 2026, 2:37pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/6 "2026-03-17T14:37:03Z")
Please create a separate post in #Warhammer 40,000: Darktide > Technical Support 🙏 ---
**Author:** ![blood\_2899](https://dub1.discourse-cdn.com/flex013/user_avatar/forums.fatsharkgames.com/blood_2899/32/113196_2.png) [@blood\_2899](https://forums.fatsharkgames.com/u/blood_2899)\ **Post date:** [March 17, 2026, 2:48pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/7 "2026-03-17T14:48:28Z")
Have you tried rebuilding shaders? Error message looks like shaders related. According to AI: To rebuild shaders in Darktide and fix stuttering or crashing, you must **delete the shader cache files located in your AppData folder**. Type `%appdata%` into the Windows search bar, navigate to `Roaming\Fatshark\Darktide`, and delete the `shader_cache` and `compiled_shaders` folders. Restarting the game will force a fresh rebuild. **Steps to Rebuild Darktide Shaders** 1. **Close the Game:** Ensure Darktide is not running. 2. **Locate Cache Files:** Press `Windows Key + R`, type `%appdata%`, and hit Enter. 3. **Navigate:** Go to `AppData\Roaming\Fatshark\Darktide`. 4. **Delete Folders:** Delete the `shader_cache` and `compiled_shaders` folders. 5. **Restart Game:** Launch Darktide, and it will re-compile the shaders during the loading screen ---
**Author:** ![blood\_2899](https://dub1.discourse-cdn.com/flex013/user_avatar/forums.fatsharkgames.com/blood_2899/32/113196_2.png) [@blood\_2899](https://forums.fatsharkgames.com/u/blood_2899)\ **Post date:** [March 17, 2026, 2:53pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/8 "2026-03-17T14:53:22Z")
```auto ``` Could you please correct the article: [https://support.fatshark.se/hc/en-us/articles/34694807089565-Crashing-on-Launch-After-Expeditions-Update](https://support.fatshark.se/hc/en-us/articles/34694807089565-Crashing-on-Launch-After-Expeditions-Update) @gideon404 confirmed that the maximum value of the parameter is 2048. I confirm that the game launches and runs correctly with this parameter set to 2048. Most problems with launching the game occur when the parameter is set to a higher value. ---
**Author:** ![MRSeemsGood](https://dub1.discourse-cdn.com/flex013/user_avatar/forums.fatsharkgames.com/mrseemsgood/32/112182_2.png) [@MRSeemsGood](https://forums.fatsharkgames.com/u/MRSeemsGood)\ **Post date:** [March 17, 2026, 3:29pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/9 "2026-03-17T15:29:06Z")
Nah, didnt help ---
**Author:** ![MRSeemsGood](https://dub1.discourse-cdn.com/flex013/user_avatar/forums.fatsharkgames.com/mrseemsgood/32/112182_2.png) [@MRSeemsGood](https://forums.fatsharkgames.com/u/MRSeemsGood)\ **Post date:** [March 17, 2026, 3:29pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/10 "2026-03-17T15:29:36Z")
No ---
**Author:** ![FatsharkJulia](https://dub1.discourse-cdn.com/flex013/user_avatar/forums.fatsharkgames.com/fatsharkjulia/32/11653_2.png) [@FatsharkJulia](https://forums.fatsharkgames.com/u/FatsharkJulia)\ **Post date:** [March 17, 2026, 4:10pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/11 "2026-03-17T16:10:01Z")
Thanks for checking - I’ve escalated this with the team. ---
**Author:** ![loonechkaa](https://dub1.discourse-cdn.com/flex013/user_avatar/forums.fatsharkgames.com/loonechkaa/32/112184_2.png) [@loonechkaa](https://forums.fatsharkgames.com/u/loonechkaa)\ **Post date:** [March 17, 2026, 2:43pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/12 "2026-03-17T14:43:56Z")
### Issue Type (Required): Error - (Other) ### Issue Description (Required): Latest update. Normal start from steam launcher and then on second - instant drop out and game crashed, no black screen or anything… i didnt have any side mods for this game, tried to verify file integrity twice, didnt help, checked steam parameters set for game, there none of them… ### [PC] Do You Use Mods? (Optional): No, I don’t use mods ### Reproduction Rate (Required): Once ### Platform (Required): PC - Steam ### Player ID (Optional): loonechkaa ### [PC] Crash Report (Optional): ## GUID: 2eba7cec-bc1d-4b0e-b16e-abb35bfb3b77 Log File: Info Type: [Engine Error]: HRESULT: 0x80070057 = E\_INVALIDARG, assert: `shader '#ID[8860321b]'` At `D:\a\d\e2af82edaa31c93c6098ffbd561125ed\b0be1561439953a6\stingray\runtime\d3d12_render_device\d3d12_debug.cpp:1570` in function `stingray::aftermath::d3d_assert` * * * ---
**Author:** ![blood\_2899](https://dub1.discourse-cdn.com/flex013/user_avatar/forums.fatsharkgames.com/blood_2899/32/113196_2.png) [@blood\_2899](https://forums.fatsharkgames.com/u/blood_2899)\ **Post date:** [March 17, 2026, 2:45pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/13 "2026-03-17T14:45:13Z")
Have you tried rebuilding shaders? Error message looks like shaders related. According to AI: To rebuild shaders in Darktide and fix stuttering or crashing, you must **delete the shader cache files located in your AppData folder**. Type `%appdata%` into the Windows search bar, navigate to `Roaming\Fatshark\Darktide`, and delete the `shader_cache` and `compiled_shaders` folders. Restarting the game will force a fresh rebuild. **Steps to Rebuild Darktide Shaders** 1. **Close the Game:** Ensure Darktide is not running. 2. **Locate Cache Files:** Press `Windows Key + R`, type `%appdata%`, and hit Enter. 3. **Navigate:** Go to `AppData\Roaming\Fatshark\Darktide`. 4. **Delete Folders:** Delete the `shader_cache` and `compiled_shaders` folders. 5. **Restart Game:** Launch Darktide, and it will re-compile the shaders during the loading screen ---
**Author:** ![loonechkaa](https://dub1.discourse-cdn.com/flex013/user_avatar/forums.fatsharkgames.com/loonechkaa/32/112184_2.png) [@loonechkaa](https://forums.fatsharkgames.com/u/loonechkaa)\ **Post date:** [March 17, 2026, 2:55pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/14 "2026-03-17T14:55:26Z")
> [@blood\_2899](#): > > shaders hello, while following steps, i checked 4th one in these folders, and from “ `shader_cache` and `compiled_shaders` folders “ i have only shader\_cache.hans one, so the second one in some other folder? Sorry, im very far away in my knowledge from correcting this kind of errors ---
**Author:** ![blood\_2899](https://dub1.discourse-cdn.com/flex013/user_avatar/forums.fatsharkgames.com/blood_2899/32/113196_2.png) [@blood\_2899](https://forums.fatsharkgames.com/u/blood_2899)\ **Post date:** [March 17, 2026, 2:57pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/15 "2026-03-17T14:57:06Z")
Seems like it has changed overtime. Let me ask AI or google it for you 🙂 Will edit this post soon. To clear shader cache created by Darktide, you can remove following files in `%appdata%\Fatshark\Darktide`: - `shader_cache.hans` - `shader_library.pso_lib` - `state_stream_library.pso_lib` After starting the game, the files should be recreated. ---
**Author:** ![FatsharkJulia](https://dub1.discourse-cdn.com/flex013/user_avatar/forums.fatsharkgames.com/fatsharkjulia/32/11653_2.png) [@FatsharkJulia](https://forums.fatsharkgames.com/u/FatsharkJulia)\ **Post date:** [March 17, 2026, 2:59pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/16 "2026-03-17T14:59:05Z")
Hey loonechkaa, which GPU model do you have? I only see `AMD Radeon(TM) Graphics`, with no model number, which would conventionally be an integrated GPU. ---
**Author:** ![loonechkaa](https://dub1.discourse-cdn.com/flex013/user_avatar/forums.fatsharkgames.com/loonechkaa/32/112184_2.png) [@loonechkaa](https://forums.fatsharkgames.com/u/loonechkaa)\ **Post date:** [March 17, 2026, 3:05pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/17 "2026-03-17T15:05:32Z")
AMD Ryzen 5 5600U with Radeon Graphics by AuthenticAMD, i have this one only, and before update it was enough to play on a low graphics w/o any crashes ---
**Author:** ![FatsharkJulia](https://dub1.discourse-cdn.com/flex013/user_avatar/forums.fatsharkgames.com/fatsharkjulia/32/11653_2.png) [@FatsharkJulia](https://forums.fatsharkgames.com/u/FatsharkJulia)\ **Post date:** [March 17, 2026, 3:11pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/18 "2026-03-17T15:11:26Z")
Hmmm, I am surprised it worked without issue before admittedly! Could you try this?: ### Step 1: Disable Steam Cloud Saving If Steam Cloud saving is enabled for Darktide, this may automatically restore the AppData and consequently cause the issue to resurface. 1. Navigate to your Steam library 2. Right-click Darktide 3. Select ‘Properties’ 4. On the ‘General’ tab, scroll down to ‘Steam Cloud’ 5. Disable ‘Keep game saves in the Steam Cloud for Warhammer 40,000: Darktide’ ### Step 2: Delete AppData **NOTE** : By deleting your AppData, operative loadouts and custom keybindings will be reset. You may wish to make a back-up of the directory in the event deleting your AppData does not work to resolve the issue. 1. Press the Windows key + R 2. Enter %appdata% within the search input and select ‘OK’ 3. Navigate to: `AppData\Roaming\Fatshark` 4. Delete the entire ‘Darktide’ directory ### Step 3: Verify Integrity of Game Files You will then need to use the ‘Verify Integrity of Game Files’ option, which is accessible via the Steam client and will ensure the installation is complete. 1. Right-click Darktide in your Steam library sidebar 2. Select ‘Properties’ 3. Select the ‘Local Files’ tab 4. Select the ‘Verify Integrity of Game Files’ button 5. When complete, close and reopen Steam ---
**Author:** ![loonechkaa](https://dub1.discourse-cdn.com/flex013/user_avatar/forums.fatsharkgames.com/loonechkaa/32/112184_2.png) [@loonechkaa](https://forums.fatsharkgames.com/u/loonechkaa)\ **Post date:** [March 17, 2026, 3:14pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/19 "2026-03-17T15:14:20Z")
i deleted them from folder and launched game again, nothing changed at all… same crash, same error code and etc… ---
**Author:** ![FatsharkJulia](https://dub1.discourse-cdn.com/flex013/user_avatar/forums.fatsharkgames.com/fatsharkjulia/32/11653_2.png) [@FatsharkJulia](https://forums.fatsharkgames.com/u/FatsharkJulia)\ **Post date:** [March 17, 2026, 4:44pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/20 "2026-03-17T16:44:32Z")
Decided to consolidate these reports so it’s easier to keep you updated (I know I told you to share your post separately loonechkaa, my apologies!). Anyway, our Engine Developers are looking in to this - I’ll keep you posted. ---
**Author:** ![killafrog](https://avatars.discourse-cdn.com/v4/letter/k/779978/32.png) [@killafrog](https://forums.fatsharkgames.com/u/killafrog)\ **Post date:** [March 17, 2026, 4:58pm UTC](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595/21 "2026-03-17T16:58:29Z")
Same here. I’ve even tried reinstalling everything but nothing helped. So … no new game mode for me 🙂 Great (as always). Report below: GUID: 04e06e78-6384-42fb-b00d-6cd245977f87 Log File: Info Type: [Engine Error]: HRESULT: 0x80070057 = E\_INVALIDARG, assert: `shader '#ID[8860321b]'` At `D:\a\d\e2af82edaa31c93c6098ffbd561125ed\b0be1561439953a6\stingray\runtime\d3d12_render_device\d3d12_debug.cpp:1570` in function `stingray::aftermath::d3d_assert` * * * [Next page](https://forums.fatsharkgames.com/t/known-issue-e-invalidarg-assert-shader-crash-after-expeditions-update/119595.md?page=2)