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Windows Azure Tip: The "DeleteCurrentDeployment" task failed unexpectedly

Recently I’ve been helping a client to migrate an existing web application to the Azure cloud. We’ve been facing several different obstacles along the way, but most of them were technical. However, today we got to our first “DUDE, I HAVE NO IDEA WHAT’S GOING ON” moment – we got the next error when trying to build the Azure project in Visual Studio:

“Error 1  The "DeleteCurrentDeployment" task failed unexpectedly.
System.InvalidCastException: Unable to cast COM object of type 'System.__ComObject' to interface type 'Microsoft.VisualStudio.OLE.Interop.IServiceProvider'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{6D5140C1-7436-11CE-8034-00AA006009FA}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).”

*crying inside*

Searching the web resulted in a very few unrelated cases with crazy solutions - I even tried to run regsvr32 on all of the DLLs in the system32 folder… which didn’t help. At all.

*crying out*

Anyways! 2 hours later I had everything working again! How? read on…

The Solution

There is actually nothing fancy about the solution… The thing that worked for me was uninstalling Windows Azure SDK and Windows Azure Tools for Visual Studio and then reinstalling them. That’s it.

*tears of joy*

All the best,
Shay.



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