Upgrading Citrix Licensing from 11.14.0.1 build 23101 to 11.16.3.0 build 30000 fails with: "Upgrade failed. The server.xml and other configuration files were not found. Contact Citrix."

Problem

You attempt to upgrade Citrix Licensing from 11.14.0.1 build 23101 to 11.16.3.0 build 30000 but the process fails with:

Failed to configure Citrix Licensing.

Upgrade failed. The server.xml and other configuration files were not found. Contact Citrix.

Fiddling around with the executable and MSI to ensure that it is not blocked does not correct the issue:

Solution

I’m not sure about what causes this issue but it has happened to me several times during my upgrades of the Licensing server role. To complete the upgrade, simply uninstall the Citrix Licensing application in Programs and Features:

Then install the licensing server role again:

The license files aren’t removed during an uninstall but ensure that you have access to the Citrix portal to redownload the license if it is not present.