BugZero | Veeam BugID kb3105 - Exchange Backup Jobs Warning "Failed to find group...

Veeam - Defect ID: kb3105

Exchange Backup Jobs Warning "Failed to find group owner account"

Veeam - Defect ID: kb3105

Exchange Backup Jobs Warning "Failed to find group owner account"

Last updated on March 10th, 2026

BugZero Risk Score
9.8 High

Overall: 9.8

Severity: 10.0

Community: 8.9

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Bug Details

Priority: Issue
Status: Solved

Description

Challenge

Backup jobs with Microsoft Exchange items may result in the warning message shown in both the Veeam Backup for Microsoft 365 console and the Veeam.Archiver.Proxy.log file. Processing mailbox {$mailboxName} completed with warning: Failed to find group owner account

Cause

The Veeam software is unable to impersonate Microsoft 365 groups (mail-enabled and security groups) that do not have an owner assigned.

Solution

Make sure to assign an owner to each of the Office 365 groups (mail-enabled and security groups) as described in this Microsoft article.

Change history

2026-03-10 Added: 8.2, 8.3, ALL

No changes to display

2023-03-16 Added: 8.3, 8.2

2023-03-16 Added: 8.2, 8.3

2023-03-16 Added: 8.3, 8.2

2023-03-16 Added: 8.2, 8.3

2023-03-16 Added: 8.3, 8.2

2023-03-16 Added: 8.2, 8.3

2023-03-16 Added: 8.3, 8.2

2023-03-16 Added: 8.2, 8.3

2023-03-16 Added: 8.3, 8.2

2023-03-16 Added: 8.2, 8.3

2023-03-16 Added: 8.3, 8.2

2023-03-16 Added: 8.2, 8.3

2023-03-16 Added: 8.3, 8.2

2023-03-16 Added: 8.2, 8.3

2023-03-16 Added: 8.3, 8.2

2023-03-16 Added: 8.2, 8.3

2023-03-16 Added: 8.3, 8.2

2023-03-16 Added: 8.2, 8.3

2023-03-16 Added: 8.3, 8.2

2023-03-16 Added: 8.2, 8.3

2023-03-16 Added: 8.3, 8.2

2023-03-16 Added: 8.2, 8.3

2023-03-16 Added: 8.3, 8.2

2023-03-16 Added: 8.2, 8.3

2023-03-16 Added: 8.3, 8.2

2023-03-16 Added: 8.2, 8.3

2023-03-16 Added: 8.3, 8.2

2023-03-16 Added: 8.2, 8.3

2023-03-16 Added: 8.3, 8.2

2023-03-16 Added: 8.2, 8.3

2023-03-16 Added: 8.3, 8.2

2023-03-16 Added: 8.2, 8.3

2023-03-16 Added: 8.3, 8.2

2023-03-16 Added: 8.2, 8.3

2023-03-16 Added: 8.3, 8.2

2023-03-16 Added: 8.2, 8.3

2023-03-16 Added: 8.3, 8.2

2023-03-16 Added: 8.2, 8.3

2023-03-16 Added: 8.3, 8.2

2023-03-16 Added: 8.2

2023-03-16 Added: 4.0, 3.0, 8, 7.0, 8.1, 5.0, 7a, 6.0

2023-03-16 Added: 8.2, 8.3

2023-03-16 Added: 8.3, 8.2

Relevant Products

Click on a version to see all relevant bugs

Affected versions:7a, 8.1, 5.0, 8, 4.0, 8.2, 6.0, 8.3, 7.0, 3.0, ALL

Fixed versions: No known fixed versions

Relevant Products

Click on a version to see all relevant bugs

Affected versions:7a, 8.1, 5.0, 8, 4.0, 8.2, 6.0, 8.3, 7.0, 3.0, ALL

Fixed versions: No known fixed versions

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Exchange Backup Jobs Warning "Failed to find group owner account"

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Veeam - Defect ID: kb3105

Exchange Backup Jobs Warning "Failed to find group owner account"

Veeam - Defect ID: kb3105

Exchange Backup Jobs Warning "Failed to find group owner account"

Last updated on March 10th, 2026

BugZero Risk Score9.8 High

Bug Details

Challenge

Cause

Solution

Top Veeam Defects

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BugZero Risk Score
9.8 High