Uninstall Beyondtrust Powerbroker.
Last updated on
12 February 2026
Learn how to resolve error code 505 "Failed to lower privileges" during Adobe app installation on Windows.
Error 505 occurs when the installer lacks the required permissions to complete the installation or deployment. This can happen due to third-party software, missing system updates, or disabled Windows services.
To resolve this error, try these solutions in order:
Third-party software blocks installation permissions
Some security or privilege management tools can interfere with the installer. If you have such software installed, uninstall it before proceeding.
Restart your device and install the app again.
System lacks critical Windows updates
Missing or outdated system components can prevent the installer from functioning correctly.
Go to Start > Settings > Update & Security > Windows Update.
Select Check for updates and install any available updates.
Restart your device, if prompted and then try reinstalling the app.
Remote deployment lacks proper execution context
If deploying the app remotely through Admin Console Packages, ensure the package is executed under the Local System context to grant the necessary permissions.
Secondary Logon service is disabled
This Windows service is required for specific installation tasks. Follow these steps to turn on the Secondary Logon service:
The installer requires this Windows service to perform certain privileged actions.
Press Windows + R, type services.msc, and press Enter.
Locate Secondary Logon in the list.
If it’s disabled, right-click and select Start.
Once the installation is complete, you may disable the service again after installation, if necessary.
