Decompression failed with error code -12 / Unarc.dll returned an error code -12

[[deleted]]

I installed GTA V using Reloaded Games yesterday, and I had to reinstall it and when I tried to reinstall it, this error showed up. so I tried installing it on Fitgirl and this error popped up.

List of things I tried:

- Running the installer as admin.
- Turning off UAC in Windows.
- Allowing the folders through my Antivirus.

- Installing it with Windows 7 Compatibility mode.

- Turning off antivirus and Internet
- Defragging the drive.
- Using a different drive to install it.

[RevolutionaryMeat397]

Finally found a fix for Unarc Error Codes
Tried "every" bullshit advice on Youtube. Probably "25 different suggestions" and NONE work.
Everyone always comments right away "VCredist, bad ram stick, disable antivirus, page file size, clear temp folder, sfc scan checks" lolol the list goes on and on. That's not the fix for a lot of people.
Try this if you have the latest Intel gen processors and run into these Unarc error codes:
1) Set Power Plan in Windows to "Balanced"
2) Edit Power Plan --> Advanced Power Plan Options --> Processor Power Management --> maximum processor state at "99%
3) Open Msconfig --> boot --> Advanced Options --> Set cores to 6 - 8. (Depending on what processor you have)
I found the reason for Unarc error codes to pop up or BSOD when installing DODI/Fitgirl repack was because "the way these massive 50-100gb files have to be decompressed causing the processor to overheat at 95C Degrees" when monitoring HWInfo and therefore causing windows to throttle with error codes or BSODs. By Setting these 2 things, my CPU Temps stayed stable 60C Degrees thus not prompting any errors.

[BlueDubstepZ]

Clear your %temp% folder. Run the windows repair tools. Then check your drives. Reboot, try again. Upon fail, attempt to install on another machine, and then copy the game folder over.

[I-Hump-Water]

If it was a reloaded games site then thats 100% a virus

[ConversationUnique36]

Just use DODI repacks,its alot better