BugZero | Veeam BugID kb2118 - Configuring a SQL staging server to a Veeam Explor...

Veeam - Defect ID: kb2118

Configuring a SQL staging server to a Veeam Explorer gives “error: 25”

Veeam - Defect ID: kb2118

Configuring a SQL staging server to a Veeam Explorer gives “error: 25”

Last updated on August 12th, 2025

BugZero Risk Score
9.8 High

Overall: 9.8

Severity: 10.0

Community: 8.9

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Bug Details

Description

Challenge

When configuring a staging SQL server for Veeam Explorers, the following error appears when a malformed server name is provided: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 25 – Connection string is not valid) The parameter is incorrect

Cause

This error occurs when the staging SQL Server name has been specified using a UNC path, as shown in this example:

Solution

To resolve this, update the SQL Server name value to specify the SQL Server's hostname or IP and the instance name. Hint: Use the same formatting you would use to connect Microsoft SQL Server Management Studio to the SQL Instance.

Change history

2025-08-12 Added: 9.0, 10, 12.3.1, 12, 6.1, 12.3, 5.0, 9.5, 12.3.2, 8.0, 13, 12.1, 12.2, 11, 7.0, 6.5

2025-08-12 Removed: ALL

2025-08-12 Added: ALL

2025-08-12 Added: 7.0, 11, 12, 9.0, 5.0, 12.3.2, 10, 12.3.1, 8.0, 12.3, 9.5, 12.1, 6.5, 13, 12.2, 6.1

2025-08-12 Removed: ALL

2025-08-12 Added: 12.1, 8.0, 13, 12.3.2, 12, 6.1, 9.5, 10, 12.3.1, 12.2, 11, 9.0, 7.0, 12.3, 6.5, 5.0

2025-08-12 Removed: ALL

2025-08-12 Added: 9.5, 7.0, 6.1, 12.3.1, 5.0, 12.3.2, 10, 12.3, 8.0, 11, 6.5, 12.1, 12, 9.0, 12.2, 13

2025-08-12 Removed: ALL

2025-08-12 Added: 6.1, 12.3, 12.3.1, 8.0, 12.1, 9.0, 12.2, 13, 10, 12, 7.0, 5.0, 9.5, 6.5, 11, 12.3.2

2025-08-12 Removed: ALL

2025-08-12 Added: 11, 12.1, 9.5, 9.0, 7.0, 6.5, 12.3, 12, 12.3.1, 5.0, 13, 12.2, 10, 8.0, 6.1, 12.3.2

2025-08-12 Removed: ALL

2025-08-12 Added: 12.1, 10, 9.0, 6.1, 7.0, 12.2, 12.3.2, 6.5, 12.3, 8.0, 12.3.1, 9.5, 11, 12, 13, 5.0

2025-08-12 Removed: ALL

2025-08-12 Added: 6.5, 10, 9.0, 12.3.1, 12.1, 12.3.2, 6.1, 7.0, 5.0, 13, 9.5, 12.2, 12.3, 12, 11, 8.0

2025-08-12 Removed: ALL

2025-08-12 Added: 12.3, 13, 12.3.1, 12, 9.0, 9.5, 10, 7.0, 6.1, 12.2, 5.0, 11, 12.1, 8.0, 12.3.2, 6.5

2025-08-12 Removed: ALL

2025-08-12 Added: 12.3.2, 9.5, 5.0, 6.1, 13, 10, 12.3.1, 12.2, 8.0, 11, 12.3, 9.0, 12.1, 12, 6.5, 7.0

2025-08-12 Removed: ALL

2025-08-12 Added: 6.5, 8.0, 12.3.2, 6.1, 13, 12.1, 11, 7.0, 12, 10, 9.5, 9.0, 12.3.1, 5.0, 12.3, 12.2

2025-08-12 Removed: ALL

2025-08-12 Added: 6.1, 9.5, 12.3.1, 9.0, 12.2, 12, 12.3.2, 7.0, 11, 6.5, 5.0, 12.1, 13, 12.3, 8.0, 10

2025-08-12 Removed: ALL

2025-08-12 Added: 9.0, 12, 10, 7.0, 12.3, 12.1, 9.5, 8.0, 6.5, 12.3.2, 12.3.1, 13, 12.2, 6.1, 5.0, 11

2025-08-12 Removed: ALL

2025-08-12 Added: 10, 9.5, 11, 5.0, 6.1, 12.3.1, 12.3, 7.0, 12.2, 12.1, 6.5, 9.0, 8.0, 12, 13, 12.3.2

2025-08-12 Removed: ALL

2025-08-12 Added: 7.0, 12.3.1, 12.3.2, 13, 12.3, 9.0, 5.0, 12.2, 6.1, 10, 12, 12.1, 9.5, 8.0, 6.5, 11

2025-08-12 Removed: ALL

2025-08-12 Added: 9.5, 7.0, 6.5, 12.3.2, 5.0, 12, 12.3.1, 12.3, 12.1, 13, 9.0, 10, 6.1, 8.0, 12.2, 11

2025-08-12 Removed: ALL

2025-08-12 Added: 12.1, 8.0, 11, 6.1, 13, 12.3.2, 12, 12.2, 9.5, 9.0, 6.5, 7.0, 10, 5.0, 12.3.1, 12.3

2025-08-12 Removed: ALL

2025-08-12 Added: 12.3, 6.5, 12.3.1, 12, 5.0, 12.1, 6.1, 10, 7.0, 8.0, 11, 9.0, 13, 12.2, 12.3.2, 9.5

2025-08-12 Removed: ALL

2025-08-12 Added: 12.1, 12.3, 8.0, 9.0, 9.5, 6.5, 11, 7.0, 12.3.2, 12.3.1, 6.1, 10, 5.0, 12, 12.2, 13

2025-08-12 Removed: ALL

2025-08-12 Added: 12.3.1, 12, 11, 6.5, 6.1, 12.1, 12.3, 13, 12.3.2, 8.0, 7.0, 9.5, 5.0, 9.0, 12.2, 10

2025-08-12 Removed: ALL

2025-08-12 Added: 12.3, 9.0, 6.5, 12.1, 8.0, 13, 9.5, 5.0, 12.2, 12, 11, 10, 7.0, 6.1, 12.3.2, 12.3.1

2025-08-12 Removed: ALL

2025-08-12 Added: 8.0, 12.1, 12, 9.5, 11, 12.3.2, 12.2, 9.0, 10, 12.3, 12.3.1, 13, 7.0, 6.5, 6.1, 5.0

2025-08-12 Removed: ALL

2025-08-12 Added: 10, 9.0, 9.5, 12.3, 12.3.2, 12.1, 7.0, 12.3.1, 13, 8.0, 5.0, 12, 6.5, 12.2, 6.1, 11

2025-08-12 Removed: ALL

2025-08-12 Added: 12.1, 11, 7.0, 12, 10, 9.5, 6.5, 8.0, 6.1, 12.2, 12.3.1, 5.0, 9.0, 13, 12.3, 12.3.2

2025-08-12 Removed: ALL

2025-08-12 Added: 11, 13, 5.0, 12.1, 12, 10, 9.5, 9.0, 8.0, 12.2, 6.5, 12.3.1, 6.1, 7.0, 12.3.2, 12.3

2025-08-12 Removed: ALL

2025-08-12 Added: 9.0, 6.1, 10, 12.3.2, 6.5, 12.3, 13, 12.3.1, 12, 9.5, 12.1, 8.0, 7.0, 12.2, 11, 5.0

2025-08-12 Removed: ALL

2025-08-12 Added: 12.3.2, 12, 12.2, 12.3, 12.3.1, 6.5, 12.1, 7.0, 8.0, 11, 6.1, 10, 9.5, 9.0, 13, 5.0

2025-08-12 Removed: ALL

2025-08-12 Added: 9.5, 12.1, 12.3.1, 13, 12, 8.0, 6.5, 11, 9.0, 6.1, 5.0, 7.0, 12.3.2, 10, 12.3, 12.2

2025-08-12 Removed: ALL

2025-08-12 Added: 9.0, 12.2, 12.3, 9.5, 7.0, 12.3.1, 5.0, 11, 12, 6.5, 12.3.2, 12.1, 8.0, 10, 13, 6.1

2025-08-12 Removed: ALL

2025-08-12 Added: 12.3.1, 6.1, 11, 12.3.2, 9.0, 12.3, 7.0, 13, 12.1, 8.0, 6.5, 5.0, 12, 10, 9.5, 12.2

2025-08-12 Removed: ALL

2025-08-12 Added: 9.5, 9.0, 8.0, 12.3.2, 11, 6.1, 12, 7.0, 12.1, 13, 12.3, 6.5, 12.2, 10, 12.3.1, 5.0

2025-08-12 Removed: ALL

2025-08-12 Added: 12, 9.0, 13, 8.0, 12.2, 12.1, 12.3.1, 10, 6.5, 11, 6.1, 5.0, 7.0, 12.3.2, 9.5, 12.3

2025-08-12 Removed: ALL

2025-08-12 Added: 12.3.2, 9.0, 7.0, 12.2, 12, 12.3.1, 13, 11, 6.5, 6.1, 12.1, 9.5, 5.0, 10, 8.0, 12.3

2025-08-12 Removed: ALL

2025-08-12 Added: 12, 9.5, 12.2, 6.1, 12.1, 11, 12.3.1, 10, 12.3, 8.0, 7.0, 9.0, 13, 12.3.2, 5.0, 6.5

2025-08-12 Removed: ALL

2025-08-12 Added: 12, 12.1, 12.3.1, 8.0, 7.0, 6.5, 10, 11, 12.3.2, 12.2, 5.0, 9.5, 13, 9.0, 12.3, 6.1

2025-08-12 Removed: ALL

2025-08-12 Added: 12.3.1, 12.1, 6.5, 12.3.2, 12.2, 11, 9.5, 9.0, 13, 10, 12, 6.1, 5.0, 7.0, 12.3, 8.0

2025-08-12 Removed: ALL

2025-08-12 Added: 6.1, 5.0, 9.0, 12.3, 7.0, 6.5, 12.3.1, 11, 8.0, 12, 12.1, 9.5, 10, 12.2, 12.3.2, 13

2025-08-12 Removed: ALL

2025-08-12 Added: 8.0, 6.5, 12, 7.0, 6.1, 12.2, 5.0, 9.0, 12.3.2, 12.3.1, 12.3, 11, 10, 9.5, 12.1, 13

2025-08-12 Removed: ALL

2025-08-12 Added: 6.1, 12.2, 7.0, 12.3.2, 10, 9.0, 5.0, 13, 12.1, 12.3.1, 9.5, 8.0, 12.3, 11, 6.5, 12

2025-08-12 Removed: ALL

2025-08-12 Added: 11, 9.0, 7.0, 9.5, 12.3.2, 6.5, 10, 8.0, 12.2, 12.1, 13, 12.3.1, 12.3, 12, 6.1, 5.0

2025-08-12 Removed: ALL

2025-08-12 Added: 6.5, 12.3.2, 8.0, 6.1, 12.1, 12.3.1, 10, 9.5, 12, 11, 7.0, 13, 12.3, 12.2, 5.0, 9.0

2025-08-12 Removed: ALL

2025-08-12 Added: 7.0, 5.0, 12.2, 8.0, 6.5, 13, 6.1, 12.3.2, 11, 12.3.1, 12, 9.0, 10, 9.5, 12.3, 12.1

2025-08-12 Removed: ALL

2025-08-12 Added: 13, 12.3.2, 9.0, 12.3, 6.1, 9.5, 8.0, 12, 7.0, 12.2, 6.5, 5.0, 12.3.1, 10, 11, 12.1

2025-08-12 Removed: ALL

2025-08-12 Added: 9.0, 12, 12.3.2, 6.5, 12.1, 5.0, 13, 11, 7.0, 12.3, 10, 8.0, 9.5, 6.1, 12.2, 12.3.1

2025-08-12 Removed: ALL

2025-08-12 Added: 11, 13, 12.3.2, 9.0, 8.0, 6.1, 9.5, 12, 6.5, 7.0, 12.1, 12.2, 5.0, 12.3, 10, 12.3.1

2025-08-12 Removed: ALL

2025-08-12 Added: 12.1, 12.3, 5.0, 12, 11, 6.5, 6.1, 12.3.2, 12.2, 9.5, 10, 12.3.1, 8.0, 13, 7.0, 9.0

2025-08-12 Removed: ALL

2025-08-12 Added: 12.1, 9.5, 7.0, 5.0, 6.1, 12.3.1, 12.2, 6.5, 9.0, 11, 8.0, 13, 12.3, 10, 12.3.2, 12

2025-08-12 Removed: ALL

2025-08-12 Added: 7.0, 9.0, 13, 12.1, 12, 12.3.2, 11, 9.5, 10, 6.5, 6.1, 12.3, 5.0, 8.0, 12.3.1, 12.2

2025-08-12 Removed: ALL

2025-08-12 Added: 13, 12.3.1, 11, 10, 6.1, 6.5, 9.0, 9.5, 12.3, 7.0, 12.1, 5.0, 12.3.2, 8.0, 12.2, 12

2025-08-12 Removed: ALL

2025-08-12 Added: 12.3.1, 12.3.2, 11, 9.5, 10, 7.0, 6.5, 12, 9.0, 6.1, 5.0, 12.1, 12.2, 8.0, 12.3, 13

2025-08-12 Removed: ALL

2025-08-12 Added: 6.5, 6.1, 5.0, 8.0, 7.0, 10, 9.0, 12.3, 12.2, 12.3.2, 11, 12, 12.3.1, 9.5, 13, 12.1

2025-08-12 Removed: ALL

2025-08-12 Added: 8.0, 6.1, 7.0, 5.0, 10, 6.5, 12.3.2, 12, 12.3, 12.1, 12.2, 12.3.1, 13, 11, 9.0, 9.5

2025-08-12 Removed: ALL

2025-08-12 Added: 5.0, 8.0, 12.3.2, 11, 6.1, 13, 10, 12.3.1, 12, 9.5, 9.0, 7.0, 6.5, 12.2, 12.3, 12.1

2025-08-12 Removed: ALL

2025-08-12 Added: 12.3, 9.0, 10, 12.3.1, 6.5, 11, 9.5, 7.0, 12.3.2, 5.0, 13, 12.2, 8.0, 12.1, 6.1, 12

2025-08-12 Removed: ALL

2025-08-12 Added: 6.5, 12, 12.3, 12.3.1, 9.0, 12.2, 7.0, 9.5, 8.0, 13, 11, 5.0, 10, 12.1, 12.3.2, 6.1

2025-08-12 Removed: ALL

Relevant Products

Click on a version to see all relevant bugs

Affected versions:7.0, 11, 12, 9.0, 5.0, 12.3.2, 10, 12.3.1, 8.0, 12.3, 9.5, 12.1, 6.5, 13, 12.2, 6.1

Fixed versions: No known fixed versions

Relevant Products

Click on a version to see all relevant bugs

Affected versions:7.0, 11, 12, 9.0, 5.0, 12.3.2, 10, 12.3.1, 8.0, 12.3, 9.5, 12.1, 6.5, 13, 12.2, 6.1

Fixed versions: No known fixed versions

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Veeam - Defect ID: kb2118

Configuring a SQL staging server to a Veeam Explorer gives “error: 25”

Veeam - Defect ID: kb2118

Configuring a SQL staging server to a Veeam Explorer gives “error: 25”

Last updated on August 12th, 2025

BugZero Risk Score9.8 High

Bug Details

Challenge

Cause

Solution

Top Veeam Defects

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BugZero Risk Score
9.8 High