Fix errors installing apps

Error code 81: Another installer is already running

Error code 81 indicates that another Adobe installation might be running in the background. This might be causing a conflict, thus resulting in this error.

SOLUTION

(Note: If you received this error while installing Adobe Acrobat, see Error P81 or 81 occurs when you install Adobe Acrobat.)

1. Check for an ongoing Adobe installation in your Activity Monitor (macOS) or Task Manager (Windows) and close them. Then try installing the app.

2. If this doesn’t work, restart the machine and try to install the app again.