have you reviewed the built in report for this info?
OS version query/report
One of my customer has about 680 computers with different OS, Windows 10 1909, 20H2 and 21H2. Now we are going to upgrade them to 21H2 using SCCM. Is there any query or report to know how many Windows 10 1909 and 20H2 computers we have before the upgrade?
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Simon Ren-MSFT 40,341 Reputation points Microsoft External Staff
2022-12-08T01:31:01.127+00:00 Hi,
Agree with Garth. We can use below built-in reports to count the number and list computers with a specified OS under the Operating System category.
Count operating system versions
Computers with a specific operating system and service pack
https://learn.microsoft.com/en-us/mem/configmgr/core/servers/manage/list-of-reports#operating-systemThanks for your time. Have a nice day!
Best regards,
Simon
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