After updating a Citrix License server from 11.6.1 to 11.10 the Citrix Licensing Service crashed immediately after startup.

In the Event Log the following error was shown:

Application Error | Faulting application lmadmin.exe, version, faulting module msvcp80.dll, version 8.0.50727.6195, fault address 0x000038db

I suspected that there was a corrupt licensing file in the MyFiles folder (Default C:\Program Files\Citrix\Licensing\MyFiles).

Therefore I renemaed the MyFiles folder and the service didn’t crash anymore. Then I tried to Import the license files manually one by one and then I got this error:


However the file was already copied to the MyFiles folder:


So after a restart the service would crash!

I compared the corrupted file with a working file, a "normal" license files looks similar to this one:


The one that made the Licensing Server crash looked like this:


I think that someone saved some html instead of a license from My Citrix. After removing the invalid license the service didn’t crash anymore.

PS: Shame on Citrix for writing such bad code!