A: Yes, but rarely. Run Windows Memory Diagnostic . If your RAM has errors, random decompression failures occur. Fix the RAM first.
Run a System File Checker (SFC) scan to identify and replace any corrupted system files: isdone.dll isarcextract unarc.dll fix download manager
Also, ensure that your download manager is up-to-date, as outdated versions may not be compatible with the latest Inno Setup installer. A: Yes, but rarely