Acrosup64.dll Is Not Marked For Installation · Direct Link

This error occurs because the Adobe installer uses technology. The file acrosup64.dll (Adobe Acrobat Support Library, 64-bit) is listed in the MSI package but its installation state is not set to "Local" (i.e., installed) — typically due to:

Encountering a cryptic error message during software installation or uninstallation can be frustrating. One such error that plagues users—particularly those working with Adobe Creative Cloud applications (like Photoshop, Illustrator, or Acrobat) on 64-bit Windows systems—is:

If applicable, manually run any accompanying .msp update files located in the same directory afterward. Root Causes of the Error

Using a full desktop standalone installation package avoids this issue. Visit the official Adobe distribution page to download the complete standalone 64-bit MSI or EXE package rather than utilizing the standard web-download stub. acrosup64.dll is not marked for installation

Always run Adobe installers with administrative privileges.

The error is a Windows Installer state mismatch, almost always caused by leftover Adobe installation data. It is fixable without reinstalling Windows.

If you are deploying this across a network and seeing this error: This error occurs because the Adobe installer uses

Open Run again, type %appdata% , and delete the folder inside the Roaming directory. Empty your Recycle Bin and restart your PC.

Standard uninstallation tools like the Windows Control Panel often fail to remove deep system hooks. Adobe provides a dedicated cleanup utility to wipe these components entirely.

Did these steps resolve the installation error, or are you deploying Adobe Acrobat via across a network? error the file acrosup64.dll is not marked for installation Root Causes of the Error Using a full

Conflicting remnants of 32-bit (x86) and 64-bit (x64) Adobe installations on the same machine often confuse the installer database. Step-by-Step Solutions to Fix the Error

If the cleaner leaves behind file system artifacts, they will continue to trip up the acrosup64.dll installation routine. Press Win + R , type %userprofile%\AppData , and press . Look inside the Local , LocalLow , and Roaming folders.

I can provide step-by-step instructions for the specific fix that fits your situation.