Select disk # (# is the number of the hard drive in which the game is installed) Use the following commands and press enter after each of them. Open CMD and run it as an administrator.Apply the setting and error should be resolved. “Compatibility” tab > check “Run this program as an administrator”. Right-click on Steam.exe > “Properties”.Disk Write ErrorĪccording to Garry’s Mod users, they are unable to download it or update it as Steam gives the Disk Write Error. This will fix the Engine Error for Garry’s Mod. If it has, then exclude the game’s folder from your anti-virus and then verify game files. Open your anti-virus and see if the software has quarantined or blocked the file. Or your anti-virus/Windows Defender might have quarantined the file mentioned in the error. Open Steam > right-click on Garry’s Mod > Properties > Local Files tab > click on “Verify integrity of game files”.
