Portable — Acrosup64.dll Is Not Marked For Installation

If you are trying to install or update Adobe Acrobat or Reader and hit the error message you aren't alone. This is a common Windows Installer (MSI) glitch that usually pops up when there’s a conflict between an existing installation and a new update.

Would you like a PowerShell script to detect if the file is missing, or a template for a bug tracking system (e.g., Jira, Bugzilla)? acrosup64.dll is not marked for installation

: You must reboot your computer to clear the registry. If you are trying to install or update

Navigate to C:\Program Files (x86)\Adobe (or C:\Program Files\Adobe ) and delete any remaining folders. acrosup64.dll is not marked for installation