Acrobat2015webwwmuiexe -

Older installers may fail on modern systems with errors like "Access violation at address 00000000".

: It is not officially supported on Windows 11; the oldest version compatible with Windows 11 is the 2017 release. It may also cause conflicts if installed on modern 64-bit systems where servers for its activation may have been shut down. 🚀 Troubleshooting Common Issues Acrobat DC 2015 will not open / not found - Adobe Community