If the DLL files are missing or corrupt, you can download and install them. However, be cautious when downloading DLL files from third-party sources, as they may be infected with malware.
In short: Your Download Manager saved a large .exe file. When you ran that .exe , the installer called upon these three components to unpack the data. Somewhere in that chain, it failed. isdone.dll isarcextract unarc.dll fix download manager
Unstable RAM or CPU overclocks frequently trigger these specific errors during high-stress decompression. If the DLL files are missing or corrupt,