Below link steps follow
https://www.yorkerspot.com/upgrade-windows-server-2019-evaluation-to-standard-full-version/
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Our Office use Windows server 2019 ( 180 days ) Standard Evaluation operating system. After trail time will to finish with n weeks. So we purchased windows server Standard key we try to activate but we receive error
( on a computer running Microsoft windows non-core edition run ‘slui.exe 0x2a 0xc004f069 )
Below method I followed.
https://www.yorkerspot.com/upgrade-windows-server-2019-evaluation-to-standard-full-version/
Below link steps follow
https://www.yorkerspot.com/upgrade-windows-server-2019-evaluation-to-standard-full-version/
Assuming a retail channel product key you can
Dism /online /Set-Edition:ServerStandard /ProductKey:xxxxx-xxxxx-xxxxx-xxxxx-xxxxx /AcceptEula
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if the reply is helpful--