When deauthorizing a concurrent-use ArcGIS Pro basic license in License manager 10.5.1 result in all concurrent-use Pro basic licenses to FAIL on the server.
The Standard and Advanced Pro license still works (and deauthorizing is not started until fix is found).
Deauthorizing concurrent-use Desktop licenses has worked in the past on the server, but apparently not for Pro licenses...?
FLEXlm error from the log file: desktopbasicP - "No such feature exists"
