Hi @Lovas Ádám,
This could be due to a compatibility issue between the version of SSMS that you have installed and the version of SQL Server that you are running.
To resolve this issue, you can try one of the following options:
Install an older version of SSMS: As DPM 2022 is a new release, it is possible that it is not fully compatible with the latest version of SSMS. You could try installing an older version of SSMS, such as SSMS 18.x.x, which is compatible with SQL Server 2019.
Use the SQL Server Installation Center: The SQL Server Installation Center includes an option to install the SQL Server Management Tools separately from the SQL Server engine. You can launch the SQL Server Installation Center on the SQL Server machine and select the option to install the Management Tools. Then, try running the DPM 2022 installation again.
Install DPM 2022 on a separate machine: If the above options do not work, you can try installing DPM 2022 on a separate machine that does not have SSMS installed. This machine can still connect to the SQL Server instance on your SQL Server machine and use it as the DPM database.
In addition, please refer to this MS document: https://learn.microsoft.com/en-us/system-center/dpm/install-dpm?view=sc-dpm-2022
You can check these components by going in from the control panel.
Best regards,
Seeya
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