SQL server 2022 installation fails at MOF stage on Windows server 2025 24H2 (26100)

Question

SQL server 2022 installation fails at MOF stage on Windows server 2025 24H2 (26100)

Rahul K Nair 0

I am trying to install the windows HLK controller + studio on Windows server 2025 24H2 (26100) and failed at SQl installation leading to get to know SQL 2022 server edition installation fails at MOF stage of intallation with error "MOF connection failing to WMI".
Dose this a known issue? what is the workaround?

Verified belo check lists and no issues
WMI service works : PASS
Repository consistent : PASS
MOF compiler works : PASS
Permission : PASS
NameSpace exists : PASS .NET version : 4.8.1

Rahul K Nair 0 Reputation points

2026-02-12T08:48:28.3266667+00:00

Verified belo check lists and no issues
WMI service works : PASS
Repository consistent : PASS
MOF compiler works : PASS
Permission : PASS
NameSpace exists : PASS
.NET version : 4.8.1
Erland Sommarskog 132.9K Reputation points

2026-02-12T22:44:07.1033333+00:00

You will have to bear with me, but I am not acquainted with the HLK controller. Are you trying to install SQL Server separately, or is installed as part of the HLK controller?

Is HLK Controller a Microsoft product, or a third-party product?

If it is a Microsoft product, I think the best is to open a support case, and Microsoft will have to co-ordinate the various skills that are needed to troubleshoot this.
Rahul K Nair 0 Reputation points

2026-02-17T04:32:00.7833333+00:00

Thanks @Erland Sommarskog ,
As both HLK and SQL Server 2022 are Microsoft products, I appreciate your assistance on this.
Erland Sommarskog 132.9K Reputation points

2026-02-17T21:07:51.8066667+00:00

As I said I am not acquainted with HLK, and I don't work for Microsoft, so I feel no obligation to know it either. I am just a community member who like to help people with their SQL Server problems in my free time.

I reiterate that the best is likely to open a support case with Microsoft. It can be difficult to get help in forums with questions that require competence about several products. But if you want to pursue this question in Microsoft Q&A, it may be better to use a tag where HLK fits in.

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Your answer

Rahul K Nair 0 Reputation points

2026-02-12T08:48:28.3266667+00:00

Verified belo check lists and no issues
WMI service works : PASS
Repository consistent : PASS
MOF compiler works : PASS
Permission : PASS
NameSpace exists : PASS
.NET version : 4.8.1
Erland Sommarskog 132.9K Reputation points

2026-02-12T22:44:07.1033333+00:00

You will have to bear with me, but I am not acquainted with the HLK controller. Are you trying to install SQL Server separately, or is installed as part of the HLK controller?

Is HLK Controller a Microsoft product, or a third-party product?

If it is a Microsoft product, I think the best is to open a support case, and Microsoft will have to co-ordinate the various skills that are needed to troubleshoot this.
Rahul K Nair 0 Reputation points

2026-02-17T04:32:00.7833333+00:00

Thanks @Erland Sommarskog ,
As both HLK and SQL Server 2022 are Microsoft products, I appreciate your assistance on this.
Erland Sommarskog 132.9K Reputation points

2026-02-17T21:07:51.8066667+00:00

As I said I am not acquainted with HLK, and I don't work for Microsoft, so I feel no obligation to know it either. I am just a community member who like to help people with their SQL Server problems in my free time.

I reiterate that the best is likely to open a support case with Microsoft. It can be difficult to get help in forums with questions that require competence about several products. But if you want to pursue this question in Microsoft Q&A, it may be better to use a tag where HLK fits in.

Answer 1

The issue you are encountering with the SQL Server 2022 installation failing at the MOF stage due to a "MOF connection failing to WMI" is indeed a known problem. This typically indicates that there are issues with the Windows Management Instrumentation (WMI) service, which can be caused by a damaged WMI repository or other related problems.

To work around this issue, you can try the following steps:

Repair the WMI Repository: You can attempt to repair the WMI repository by running the following command in an elevated Command Prompt:
```
   winmgmt /salvagerepository
```
After this, restart the WMI service:
```
   net stop winmgmt
   net start winmgmt
```
Check WMI Service Status: Ensure that the WMI service is running. You can check this in the Services management console (services.msc).
Clean Up Previous Installations: If there have been previous failed installations, remnants of those installations may cause issues. Ensure that all SQL Server components are completely removed before attempting a new installation.
Registry Cleanup: Open the Registry Editor and check for any leftover SQL Server keys under the following paths, and delete them if they exist:
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSSQLServer
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
- HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
Use Latest Installation Media: Make sure you are using the latest version of the SQL Server 2022 installation media, as outdated files can lead to installation failures.

If these steps do not resolve the issue, you may consider creating a virtual machine to run the SQL Server installation, as this can sometimes bypass underlying OS issues.

References:

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SQL server 2022 installation fails at MOF stage on Windows server 2025 24H2 (26100)

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