Fail to Install Exchange CU 15
Fail to Install Exchange CU 15
If you fail to install Exchange CU 15 or you cannot prepare AD due to the well-known object error in your Exchange 2019.
Installation will keep failing until you remove the deleted Well-known object from your Active Directory.
Follow the steps in the article to fix the issue.
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Exchange 2019 CU 15 Stuck | Well-Known Object Error
Exchange CU 15 fails with Well-Known Object Error While Prepare/AD Microsoft Exchange 2019 CU 15 is the latest Exchange CU update released on 10 Feb 2025 This rollup update is highly recommended for all Exchange 2016 and 2019 users. Though it is straightforward for the Exchange Admins to install the latest Exchange CU updates However, sometimes it can be challenging…
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