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This release can be used to:
After installing this release, the Veeam Backup for Microsoft 365 build number will be 8.1.0.331.
General
Retry transient error after 00:00:00: Npgsql.NpgsqlException (0x80004005): Exception while reading from stream.
VSSControl: Failed to prepare guest for freeze, wait timeout {value} sec.
Cannot start the retention session because this repository is in use by other sessions.
Item previews are missing (ID: {ID} ({value} bytes)).
Upgrade
The command timed out: sudo systemctl stop Veeam.Archiver.Proxy. Current output: {proxy name} was not upgraded.
Cannot find a web backup for the internal web ID: {ID}.
Backup and Backup Copy
Cannot find object {path}.For more details, see KB4678.
Processing mailbox {user@domain.com} failed with error: Unable to access object storage (reason: Cannot access a disposed object. Object name: 'Veeam.Core.Memory.Reference`2.
{path}, Failed to download block in time: {time}.
Npgsql.PostgresException (0x80004005): 23505: duplicate key value violates unique constraint “pk_exchange_items_previews_uploads”.
The response status code does not indicate success: 409 (this operation is not permitted on an archived blob).
Restore
Cannot find object {path} or Task failed with exception (task ID: {ID}).For more details, see KB4678.
Failed to get task result because the task does not exist (ID: {ID}).
Object reference not set to an instance of an object.
REST APIs
useAuthentication
parameter set to false
may fail with the error below:(POST) /v8/RestoreSessions/{restoreSessionId}/organization/mailboxes/{mailboxId}/items/sendToDifferentAddress
Object reference not set to an instance of an object.
To manually update an existing Veeam Backup for Microsoft 365 version 8.1 (8.1.x) deployment to the latest Cumulative Patch listed on this page, follow the same steps as upgrading Veeam Backup for Microsoft 365.
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