SharePoint is not my usual topic of conversation I will admit, however this caused me pain & isn’t documented from what I could find.

For what ever reason my local SharePoint workspace recently broke, giving me this error when I tried to launch it:

I tried the various recover my account links etc.. all to no avail, I came to the conclusion that I needed to re-import the backup of my workspace, however to do this I needed to delete the broken on my laptop, I couldn’t do this as I couldn’t log in to the workspace… 

So after some digging around I found the following location (this is on Windows 7, if you’re on something older, upgrade!):

C:\Users\<username>\AppData\Local\Microsoft\Office\Groove\User\Accounts

Under here are some folders with seemingly random names, deleting the folders essentially reset SharePoint Workspace to it’s defaults & allowed me to re-import my backup – note I only had one account configured, if you have more than one you’ll need to find a way to identify which is the one for your broken account – measure twice, cut once!  Doing this will obliterate your account & any data stored locally which means anything not uploaded yet will be lost – this wasn’t an issue for me but be aware of it before you delete the account folder, if it is an issue for you this solution probably isn’t suitable.