Assertion failed + LZMA Decoding error 9


After crashing a couple times with DXGI_DEVICE_REMOVED error and finding no solutions that worked for me, I decided to delete my cache. This broke my game entirely. So I decide to reinstall FiveM completely. I delete FiveM’s folder and use a program called “Search Everything” to scan all my drives for anything relation to FiveM, then deleted it all. Then I try to install it. Broken.
I frequently get LZMA decoding error 9 while installing, but closing the installer and reopening it seems to help it move past the error. A couple times my installer would freeze at 52/53 percent. Again, restarting it would make it move past. The forums have no useful information on either of these issues.
While I was 99% certain I had no mods currently installed in my GTA, I decided I may as well try reinstalling the whole fuckn game just to be safe. (This took like 18 hours btw)
So, on a completely fresh install of GTA, and a brand new download of the FiveM installer, I try it.
Same problems.
But now the Assertion failed error is along for the ride. I uninstall all C++ Redistributables as some forum post said to, and I install the one he linked, along with the x86 version and the latest x64 update.
Doesn’t matter.
Assertion failed.
Please save me.

GTA V version? Latest
Up to date? Yes, just reinstalled fresh
Legit or Pirate copy? Legit
Steam/CD/Social Club? Steam
Windows version? Windows 10 Pro
Did you try to delete caches.xml and try again? Yes
Error screenshot (if any) image
System specifications
i3-6100 CPU
What did you do to get this issue? Tried reinstalling.
What server did you get this issue on? I don’t get that far
CitizenFX.log fileCitizenFX.log (567 Bytes)

.dmp files/report IDs Don’t know where to find that

If an issue with starting:
GTA V folder screenshot

GTA V/update/x64/dlcpacks screenshot
Filepath to FiveM folder
C:\Users\admin\Desktop\New folder\ Had it here temporarily
FiveM client folder screenshot
Did you try to disable/uninstall your Anti-virus? I don’t even have one. Defender disabled in services.msc.


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Run windows in Safe Mode with Networking and once logged in, connect to your internet, then run the installer.


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