After Windows Update Spotlight Server one SQL server is not monitoring properly (4379449)

Following a Windows update on the Spotlight server, one connection stopped collecting Workload Analysis data, and no sessions were displayed.

After recreating the connection, Workload Analysis started working again. However, the Sessions still fails to load and returns the following error:

Sessions Component: Sessions
The following error occurred while collecting data:
Der Enumerationswert von SqlDbType, 1, ist ungültig. Parametername: SqlDbType [Error Code: 13]
Table: Full Session List

Repair the .NET Framework:

Go to Control Panel | Programs and Features.

Find “Microsoft .NET Framework X.X” in the list.

Right-click it , choose Change and then select Repair.