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Thanks but I doubt it's a license issue. The IRIS installer creates another log in C:\Windows directory, and it also contains no useful information. At some point the installation process just hangs as well as the log file stops growing.

UPD1: launched the installation package via the "Run as administrator" menu item. Now the messages.log file contains the following diagnostics info:

- on Ryzen 3900 - the processor has too many cores which is not allowed by Community edition license

- on Athlon 3000G the error message is less informative: `11/06/22-01:06:28:788 ( 5200) 3 irisctl.dll (error during startup):(289) IRIS failed to start.  IRIS Control Process terminated abnormally (exit code = 0).`

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