File verification failure. Unknown file not found in manifest.

Blue

Member
I have been trying to launch the game, but I get errors whenever I do. I heard this might have something to do with the new anticheat, so I am hesitant to try to join any servers at the moment. I have never used external Deadlock cheats nor do I ever plan to, but playing the game without the anticheat files sounds like a bad idea.


  1. I try to launch game via Steam. Steam tells me the cloud is out of date. That is weird considering I currently only have the game installed on one device and the library page says they are up to date, but I click play anyways. (I have tried installing it once on a laptop, but that was weeks ago and has long since been uninstalled).
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  2. Error 1.
    1721258619116.png
  3. Error 2.
    1721258795301.png
  4. Despite errors, game launches but does not go past Valve splash screen.
    1721259531049.png
  5. Error 3.
    1721259002443.png
  6. Error 4.
    1721259080159.png
  7. Error 5.
    1721259100497.png
  8. Error 6.
    1721259142112.png
  9. Error 7.
    1721259195078.png
  10. Error 8.
    1721259232996.png
  11. Error 9.
    1721259267652.png
  12. Error 10.
    1721259294630.png
  13. Deadlock progresses to the title screen, but tells me the network is offline. (I am in the NA region, the servers should be up at the time I tried to play.)
    1721259340314.png
  14. A few seconds later, the notification is gone.
    1721259380529.png


Code:
amd_ags_x64.dll

animationsystem.dll

assetpreview.dll

ati_compress_wrapper.dll

bugreporter_filequeue.dll

cairo.dll

citadel.signatures

d3dcompiler_47.dll

dbghelp.dll

embree3.dll

engine2.dll

filesystem_stdio.dll

gfsdk_aftermath_lib.x64.dll

helpsystem.dll

icui18n.dll

icuuc.dll

imemanager.dll

inputsystem.dll

libavcodec-58.dll

libavformat-58.dll

libavresample-4.dll

libavutil-56.dll

libfbxsdk_2020_3_1.dll

libfontconfig-1.dll

libfreetype-6.dll

libglib-2.0-0.dll

libgmodule-2.0-0.dll

libgobject-2.0-0.dll

libgthread-2.0-0.dll

libmpg123-0.dll

libpango-1.0-0.dll

libpangoft2-1.0-0.dll

libswscale-5.dll

localize.dll

materialsystem2.dll

meshsystem.dll

navsystem.dll

networksystem.dll

p4lib.dll

panorama.dll

panoramauiclient.dll

panorama_text_pango.dll

particles.dll

phonon.dll

phonon4.dll

physicsbuilder.dll

project8.exe

propertyeditor.dll

pulse_system.dll

Qt5Concurrent.dll

Qt5Core.dll

Qt5Gui.dll

Qt5Widgets.dll

qt5_plugins

rendersystemdx11.dll

rendersystemempty.dll

rendersystemvulkan.dll

resourcecompiler.dll

resourcesystem.dll

scenefilecache.dll

scenesystem.dll

schemasystem.dll

SDL3.dll

soundsystem.dll

steamaudio.dll

steamnetworkingsockets.dll

steam_api64.dll

steam_appid.txt

subtools

symsrv.dll

system.signatures

tier0.dll

toolframework2.dll

v8.dll

v8system.dll

v8_libbase.dll

v8_libplatform.dll

v8_zlib.dll

valve_avi.dll

valve_wmf.dll

vconcomm.dll

vconsole2.exe

vfx_dx11.dll

video64.dll

visbuilder.dll

vphysics2.dll

vscript.dll

worldrenderer.dll
1721260110285.png

It does not matter if I click OK or Cancel on the errors; the results are the same. I have tried to verify the integrity of the game files and even reinstalling the game, but neither helped.
 

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Last edited:
I am suffering from the exact same problem. Missing files seem to be the exact same.

Main difference is that my Steam Cloud is up-to-date to seems to be unrelated.

I have attempted to Verify integrity of game files, Reinstall, and manually delete the entire Project 8 folder in steamapps.


Similarily not using any IME


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