Problems with the license

Problems with the license

Posted by: santer.p75 on 30 March 2026, 2:17 pm EST

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  santer.p75

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  Posted 30 March 2026, 2:17 pm EST - Updated 30 March 2026, 2:22 pm EST

  Hello

  I activated my serial number for 2026 online, and activation with the “Mescius License Manager” tool was also successful.

  Unfortunately, the Visual Studio project keeps displaying the message that I don’t have a valid license.

  Could not find file ‘C:.…\obj\x64\Debug\net8.0-windows7.0.sa3licx’.

  What am I doing wrong?

  

  983×640 47.9 KB

  

  1012×730 49.7 KB

  

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  uttkarsh.matiyal

  

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  Posted 31 March 2026, 3:22 am EST

  Hello,

  FYI, with v755 release we have introduced a new licensing model called SA3Client. For more information, please refer to https://developer.mescius.com/forums/c1-studio/c1-2025-v2-1-maintenance-release-with-licensing-changes

  To work with v755 or higher versions, you’ll need to activate your key using SA3Client as follows:

  • Run “C:\ProgramData\SA3\sa3client-ui.exe”
  • Click button in top-right corner and check the “Generate Licenses for Previous Versions” checkbox under “Legacy Settings” to true.
  • Click “Back” and activate you key by clicking “Activate Serial Key” button.

  If you do not find “sa3client-ui.exe”, then you can run the following commands to install and run the SA3Client:

  • dotnet tool install -g sa3client
  • sa3client

  After successfully activating the key using SA3Client, clean/rebuild your project. Please let us know if it resolves the issue at your end.

  If it does not resolve the issues at your end, please share the following:

  1. result of running the following command:
     
     

     sa3client list --all

  2. The exact issue with screenshots you now observe.

  Regards,
  
  Uttkarsh.