Error: "Unsupported or unrecognized SSL message" returns from Alteryx License Server

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Error: "Unsupported or unrecognized SSL message"

When attempting to allocate seats of a license key to the Alteryx License Server (ALS), the following error is displayed:
 

A problem was encountered or an unrecognized SSL message. Unsuppored or unrecognized SSL message.

 
Using the command line, the same error is shown even with a non-existent server on the server parameter. Example:

image.png

 

Environment Details

• Altery License Server
  • Versions(s): All

 

Cause

 

If the ALS sees an environment variable FLEXNETLS_BASEURL, it uses it no matter what the -server parameter is and it is  pointing to some non-ALS server,
 

Resolution

Check what the server with the non-functioning ALS has set that FLEXNETLS_BASEURL variable. If it has some value, the solution is just getting rid of it, like:
                              set FLEXNETLS_BASEURL=

Alternatively, delete the environment variable.

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