Running an analysis in CFD 2021 results in this error:
The (motion) Solver license could not be checked out from the license server
A single-user license is assigned to the user and available under Licensing:
The Autodesk Desktop Licensing Service update version 184.108.40.20629 causes this error.
To verify the installed Licensing Service version on your system open this file in Notepad:
C:\Program Files (x86)\Common Files\Autodesk Shared\AdskLicensing\version.ini
1. Install the latest Autodesk Desktop Licensing Service, currently version 220.127.116.11.
You can uninstall all the previous licensing updates by running this file C:\Program Files (x86)\Common Files\Autodesk Shared\AdskLicensing\uninstall.exe.
Once the folder is empty run the latest licensing service from the link above.
2. Install the latest Autodesk Single Sign-On update as well:
The Autodesk knowledge base reference article explaining the cause of the error:
About the AuthorMore Content by Joanna Gryszka