The Plesk upgrade to Onyx 17.8 or Obsidian fails on Windows Server: The installation of the package ‘plesk-urlprotection’ failed with code 1603

Connect to the Plesk server via RDP

Download the plesk-urlprotection package.

Start a command prompt as Administrator.

Stop IIS service:

Warning: Plesk and websites will be offline while IIS is stopped.

C:> iisreset /stop

Install the plesk-urlprotection package:

Note: Modify the path to the plesk-urlprotection package if it is different from the below.

C:> msiexec /i "C:UsersAdministratorDownloadsplesk-urlprotection.msi" /L*V "C:plesk_urlprotection_installation_debug.txt" AUTOINSTALLER=1

Start IIS service:

C:> iisreset /start

Restart the Plesk upgrade

Connect to the Plesk server via RDP

Start a command prompt as Administrator

Stop IIS service:

Warning: Plesk and websites will be offline while IIS is stopped.

C:> iisreset /stop

Install the plesk-urlprotection package:

Note: Modify the path to the plesk-urlprotection package if it is different from the below.

C:> msiexec /i "C:ProgramDataPleskInstallercachepoolreleasePLESK-WIN_18.0.21_1598dist-windowsplesk-urlprotection.msi" /L*V "C:plesk_urlprotection_installation_debug_OBSIDIAN.txt" AUTOINSTALLER=1

Start IIS service:

C:> iisreset /start

Restart the Plesk upgrade