Error: A Command with that name already exists


Error: A Command with that name already exists.

Description: This error usually pops up from Visual Studio when there is a corrupted add-in or extension added into VSPackages.

Solution: Identify, remove and reinstall the extension. And run the following command Devenv.exe /ResetSkipPkgs from Visual Studio Command Prompt. /ResetSkipPkgs clears all options to skip loading added to VSPackages by users wishing to avoid loading problem VSPackages, then starts Visual Studio.

Edit: How to remove Addins from Visual Studio.

Open path – C:\Users\username\Documents\Visual Studio 2010\Addins and remove the necessary files.

Then type and run devenv /resetaddin following command from Visual Studio Command Prompt.

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