Unable to delete "non-existent" file checked out on GS server

Question

I need to depublish the project but GS will not allow this because it considers that there is a file "checked out". 
 On examining the GS web console, I can see that one file is indicated as "checked out" - but this file was in fact deleted some time ago (hard delete of whole file folder by systems admin). Accordingly, it is not showing as "checked out" for any users, and indeed cannot be otherwise accessed via GS (to reset by checking out and in again). 
 How can this be rectified? 
 Many thanks in advance for sharing your experience.

Luis Lopes · Answer

Hi James, 
 
Probably best to go the Archiving -> Detaching route as that ignores Checked-Out files vs. Deleting a project which checks for check-outs, if you have GroupShare 2015. 
 
When you say File deleted, you mean on the server FileStore? That should never really be done, as it can cause issues like the above. 
 
Thanks, 
Luis

Luis Lopes · Answer

Hi James, 
 
Ok, if it's still on the server that's good news. 
 
Basically in Studio: 
- Select the Project and specify "Remove from List" 
- The go to Open GroupShare Project and re-download the project (you need to select a different local folder) 
- Now everything should be visible and you can "check-in" or "cancel check-out" 
 
Thanks, 
Luis

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Unable to delete "non-existent" file checked out on GS server