Press Command + Spacebar to open Spotlight Search and type Terminal.
Last updated on
Dec 9, 2025
Learn how to resolve error code 8 "Failed to correct Adobe Genuine Service plist owner" during app installation on macOS.
Error code 8 occurs when the gccustomhook process fails to update the permission settings for the Adobe Genuine Service plist file. This issue can occur when the plist file has been manually modified, has restrictive permissions from a previous installation, or your user account doesn’t have the rights to modify system files.
Note
A plist (property list) is a macOS configuration file that stores app settings. The Adobe Genuine Service uses this plist to load and verify components during installation.
Incorrect permission settings for the Adobe Genuine Service plist file
To resolve this issue, manually set the correct permissions using Terminal.
Open Terminal and run the following command:
sudo chmod 755 /Library/LaunchDaemons/com.adobe.agsservice.plist
When prompted, enter your administrator password.
After you enter your password, Terminal doesn’t show any confirmation. It simply returns to a blank prompt — this means the command ran successfully.
Restart the system. The plist will load automatically and start the Adobe Genuine Service.
