Acrosup64.dll Is Not Marked For Installation [2021] «Exclusive»

: Editing the registry can cause serious problems if done incorrectly.

Resolving this issue generally involves a "clean slate" approach. The most effective solution is to completely remove the existing Adobe installation using the Adobe Creative Cloud Cleaner Tool or the Acrobat Cleaner Tool. Standard uninstallation through the Windows Control Panel often leaves behind the very registry entries that cause the "not marked for installation" conflict. By using a specialized cleaner tool, users can wipe the installer database clean. Once the system is scrubbed of these legacy markers, a fresh installation of the latest 64-bit version of the software usually proceeds without incident.

If the cleaner tool doesn't work, manual intervention might be needed to "hide" old files from the installer. acrosup64.dll is not marked for installation

In short:

The error is a Windows Installer state mismatch, almost always caused by leftover Adobe installation data. It is fixable without reinstalling Windows. : Editing the registry can cause serious problems

Download the official tool from the Adobe Reader and Acrobat Cleaner Tool .

Delete the folder from Local , LocalLow , and Roaming directories. Restart your computer and try the installation again. If the cleaner tool doesn't work, manual intervention

Technical Report: Error 2753 - acrosup64.dll is Not Marked for Installation 1. Executive Summary The error message "The file 'acrosup64.dll' is not marked for installation" (often accompanied by Error 2753