Follow these methods in order. Start with the simplest (re-download/check RAM) before moving to advanced fixes. Each method is tested on Windows 10 20H2 through 22H2 and 11 (backwards compatible).
If you are trying to install a large video game, a compressed software archive, or a repack (e.g., from FitGirl, Razor1911, or ElAmigos) on Windows 10, you might have been stopped in your tracks by a frustrating pop-up: unarc dll returned an error code 11 windows 10
The installer uses your system’s temporary folder (usually C:\Users[YourName]\AppData\Local\Temp). If that drive has less than for large repacks, the decompression fails. Follow these methods in order
Run the setup with the -Verify flag. Create a shortcut to setup.exe → Properties → Target: "D:\Games\setup.exe" -Verify This forces a checksum of all .bin files before extraction. If you are trying to install a large
Some repacks have a memory leak. To force the installer to use less RAM:
In plain English: The installer downloaded or read a chunk of compressed data, performed a checksum on it, and found that the data did not match the expected value. This usually happens for one of three reasons:
Post your setup log (located in %TEMP%\Setup Log YYYY-MM-DD #001.txt ) in the comments below, and we’ll analyze exactly which .bin file is failing.