If you are seeing this error during a game installation, try these verified methods: 'ISDone.dll - ISArcExtract' - Reddit you are my last resort
It is generally to download standalone .dll files from unofficial third-party websites, as these can contain malware or be incompatible with your system version. Instead, the error should be resolved by fixing the installation environment. 3. Common Fixes for ISArcExtract Errors Isarcextract.dll File Download