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Exchange Team Blog
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Released: May 2022 Exchange Server Security Updates

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The_Exchange_Team
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May 10, 2022
Microsoft has released security updates (SUs) for vulnerabilities found in: Exchange Server 2013 Exchange Server 2016 Exchange Server 2019 IMPORTANT: Starting with this release of Securit...
Updated May 27, 2022
Version 21.0
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Exchange 2013
exchange 2016
exchange 2019
on premises
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Nino_Bilic's avatar
Nino_Bilic
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May 10, 2022

PatchesOhoulihan14 No, every CU has it's own SU. SU installation does not "survive" the upgrade between CUs. See this post. EDIT: yes this is how it should work on Core.

tvanscot Yes please see the above note. /PrepareAllDomains requires Enterprise Admin.