Gta V Isdone.dll And Unarc.dll Error Fix May 2026

Turn off antivirus > Run as Admin > Limit RAM usage (2GB) > Use an NTFS drive.

Published by: Tech Game Support Reading Time: 4 minutes gta v isdone.dll and unarc.dll error fix

If you are seeing isdone.dll or unarc.dll errors during the GTA V setup (usually from a FitGirl repack or a large ISO file), These errors are almost always caused by system resource conflicts. Turn off antivirus > Run as Admin >

There is nothing more frustrating than waiting hours for Grand Theft Auto V to download, only to be slapped with a cryptic error box halfway through the installation. You step away for a snack, come back, and see it: You step away for a snack, come back,

Did this work for you? Let us know in the comments below. If you got a specific error code (like -1, -6, or -14), mention it—we have specific fixes for those too.

Or, even worse: