The specific error message, is generated by the Windows Installer service (Msiexec.exe). It is not typically a file corruption issue, but rather a logic or state error within the Windows Installer's internal tracking system.
The error message "" typically occurs during an Adobe Acrobat or Reader update/installation when the Windows Installer service encounters a conflict with an existing, often corrupted, installation. Direct Solution: Complete Cleanup and Reinstall acrosup64.dll is not marked for installation
This guide will break down what this error is, why it happens, and provide multiple step-by-step solutions to resolve it, from simple fixes to advanced troubleshooting. The specific error message, is generated by the
and specific registry keys is often required when automated tools fail. Commonly Recommended Solutions Direct Solution: Complete Cleanup and Reinstall This guide
Press Win + R , type regedit . (File → Export).
Click and allow the utility to remove deep system directories and keys. Restart your computer immediately. 2. Purge Leftover Adobe Folders Manually
