Veeam Support Knowledge Base
Veeam.Archiver.Service terminates due to 'System.OutOfMemoryException' after updating to Veeam Backup for Microsoft 365 7.0.0.3968

Veeam.Archiver.Service terminates due to 'System.OutOfMemoryException' after updating to Veeam Backup for Microsoft 365 7.0.0.3968

KB ID:	4481
Product:	Veeam Backup for Microsoft 365 \| 7.0
Published:	2023-08-04
Last Modified:	2023-10-12

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Challenge

Veeam.Archiver.Service consumes all available virtual memory and then terminates.

The issue can be confirmed with the following Windows Events (System log):

The Veeam Backup for Microsoft 365 Service service terminated unexpectedly.  It has done this 1 time(s).  The following corrective action will be taken in 60000 milliseconds: Restart the service.

Cause

Veeam Backup for Microsoft 365 7.0.0.3968 has been impacted with an issue on the server relating to the use of the Exchange Online PowerShell module leveraged in some service operations.

Solution

The issue is fixed in Veeam Backup for Microsoft 365 7.0 P20231005 (7.0.0.4385) bringing a number of optimizations in EXO PowerShell v3 module calls.

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