Symptoms
In Microsoft Exchange Server 2019, the Managed Store intermittently stops responding. When this issue occurs, the mailbox that causes the issue gets quarantined, and the following event is logged:
Source: MSExchangeIS
Event ID: 1013
Details: The mailbox with mailbox guid <GUID> caused a crash or resource outage on database "<Database Name>/<GUID>".
Resolution
To fix this issue, install the following cumulative update:
- Cumulative Update 15 for Exchange Server 2019 or a later cumulative update for Exchange Server 2019