SQL Server 2008 R2 Service Pack Installation Fails - Element not found. (Exception from HRESULT: 0x80070490)

In case you are trying to install a SQL Server 2008 R2 service pack in a clustered SQL Server environment and the installation fails reporting something similar to the below:

Final result: The patch installer has failed to update the shared features. To determine the reason for failure, review the log files.
Exit code (Decimal): -568706566
Exit facility code: 1562
Exit error code: 14842
Exit message: Element not found. (Exception from HRESULT: 0x80070490)
Start time: .....
End time: .....
Requested action: Patch

Then, the first thing you can do is to check if there are any disks in the cluster that are offline. If this is the case, you need to bring the disks back online prior to trying again.

As a side note, for the recommended practice of patching clustered SQL Server instances you can read this article.

Reference: The SQL Server and .NET Hub (http://www.sqlnethub.com)

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