SQL Server 2008 R2 – Error code 0x84B20001.

When we try to install a patch over SQL Server 2008, we received the following error message.

Work Around:

Open the registry and varify the value at HKEY_LOCAL_MaCHINE\\Software\Microsoft\Microsoft SQL Server\100\ConfigurationState

The values for all the keys under this should be 1. If it is not 1, then there is some issue in configuring the corresponding feature.

Fix the feature configuration issue or edit the registry to change the value to 1 to install the patch.