Acrosup64.dll Is Not Marked For Installation [upd]
Adobe provides a dedicated deployment cleanup utility explicitly designed to handle corrupted MSI caches.
Type msiexec /unregister and press . (This unregisters the installer service temporarily). Open Run again ( Windows Key + R ).
If you are getting this error while using the Adobe Creative Cloud desktop app, try downloading the from the Adobe website instead. These installers are often more "forceful" and can bypass the minor MSI conflicts that trigger the acrosup64.dll error. acrosup64.dll is not marked for installation
Running the standard "Repair" utility from the Control Panel often fails because the installer hits the same logic error. However, it is the recommended first step.
Previous Adobe Acrobat or Reader installations left behind folders and temporary files. Open Run again ( Windows Key + R )
When this happens, the installation wizard abruptly halts, rolling back any changes and leaving your software uninstalled or broken. Understanding why this happens and how to resolve it ensures your document workflows remain uninterrupted. What is Acrosup64.dll?
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Corrupted or outdated registry keys point to DLL files that no longer exist or cannot be overwritten.
) typically occurs during an Adobe Acrobat or Reader installation when a previous version wasn't fully removed, or the installer package is corrupted. Quick Fixes for "acrosup64.dll" Error Run the Adobe Cleaner Tool : This is the most successful solution. Use the official Adobe Acrobat Cleaner Tool
Standard uninstallation through the Windows Control Panel often leaves behind residual files and registry keys. Adobe provides a dedicated tool designed to wipe these remnants completely. Close all open Adobe applications.