Acrosup64.dll Is Not Marked For Installation -

and specific registry keys is often required when automated tools fail. Commonly Recommended Solutions

The installation log contains the entry: acrosup64.dll is not marked for installation. The file acrosup64.dll is missing from the installed directory (e.g., C:\Program Files\Adobe\Acrobat DC\Acrobat\ ), and certain PDF operations (e.g., accessibility or save-as functions) fail. acrosup64.dll is not marked for installation

. It indicates a conflict where the installer script references a file that the system believes is already incorrectly present or is not designated for the current installation phase. Core Causes Corrupt Registry Entries and specific registry keys is often required when

John rebooted his computer and launched Adobe Photoshop once again. This time, the software launched without any errors, and John was able to start working on his project. This time, the software launched without any errors,

If the file exists but isn't "marked," you can try re-registering it via the Command Prompt.

update files included in the extraction if the base installer fails. Why Is This Happening? Residual Files