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Symptoms

An Edge Transport server stops responding because of a deadlock in the Shadow Redundancy Manager in Microsoft Exchange Server 2019 or Exchange Server 2016.

Resolution

To fix this issue, install one of the following updates:

For Exchange Server 2019, install the Cumulative Update 6 for Exchange Server 2019 or a later cumulative update for Exchange Server 2019.​

For Exchange Server 2016, install the Cumulative Update 17 for Exchange Server 2016 or a later cumulative update for Exchange Server 2016.

References

Learn about the  terminology that Microsoft uses to describe software updates.

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