Key not present in the dictionary

After upgrading, Remote Desktop Manager gives the following error message: The given key was not present in the dictionary.

Solution

This is a Microsoft bug, but there is a workaround.

1. In Remote Desktop Manager, go to File – Data sources.
2. Select your data source.
3. Click Edit - Advanced - More Settings.
4. In the Failover Partner Value field, type one or more space.
5. Click OK.