SCOM 2025 installation fails importing System.NetworkManagement.Library.mp – ServerDisconnectedException

I'm attempting a fresh installation of System Center Operations Manager (SCOM) 2025 on Windows Server 2025, using a separate remote SQL Server 2022 instance.

The installation consistently fails during the initial Management Pack imports:

System.NetworkManagement.Library.mp

Environment

Management Server:

• Windows Server 2025
• Fresh installation
• SCOM 2025
• Web Console not selected during installation

SQL Server:

• SQL Server 2022 CU26
• Build 16.0.4265.3
• Developer Edition (64-bit)
• Remote SQL instance
• Collation: Latin1_General_CI_AS

SQL client drivers on the Management Server:

• Microsoft ODBC Driver 17.10.6.1
• Microsoft OLE DB Driver 18.7.4.0

Installation failure

The installer successfully connects to the remote SQL Server and creates the OperationsManager database.

It progresses through several initial Management Pack imports, including:

• Microsoft.SystemCenter.OperationsManager.Internal.mp
• Microsoft.SystemCenter.ACS.Internal.mp
• Microsoft.SystemCenter.OperationsManager.2007.mp

However, it consistently fails when attempting to import:

System.NetworkManagement.Library.mp

The setup log reports:

Microsoft.EnterpriseManagement.Common.ServerDisconnectedException

The client has been disconnected from the server. Please call ManagementGroup.Reconnect() to reestablish the connection.

The installer retries the import three times before giving up.

The final errors include:

FATAL ACTION: ImportManagementPacks

FATAL ACTION: DatabaseActions

PostProcessDelegate returned false

CurrentInstallItem: Database Configuration

Troubleshooting already performed

1. Confirmed the installation account has SQL Server sysadmin permissions. The DBA also confirmed seeing the account attempt to connect to the database.
2. Increased the initial OperationsManager database size from 1,000 MB to 10,000 MB. The installation still failed.
3. Reduced the initial database size back to 1,000 MB. The installation still failed.
4. Attempted installation without selecting the Web Console. The same failure occurred.
5. Confirmed the SQL ODBC and OLE DB driver versions.
6. Checked Windows Application and System event logs around the failure time. No obvious corresponding errors were found.

Assistance required

Has anyone experienced this particular SCOMScreenshot_20261111_140017_Samsung Browser.jpg installation failure when importing System.NetworkManagement.Library.mp?

I would appreciate any suggestions from Microsoft or anyone who has successfully resolved this particular issue.

Thank you.