Eclipse - “Workspace in use or cannot be created, chose a different one.” [duplicate]

Answer 1

Go to TaskManager(Right Click in the Task Bar) and select Processess menu bar and select eclipse.exe and Click EndProcess

Answer 2

I've seen 3 other fixes so far:

1. in .metadata/, rm .lock file
2. if 1) doesn't work, try end process javaw.exe etc. to exit the IDE
3. if 1)&2) doesn't work, try rm .log file in .metadata/, and double check .plugin/.
4. This always worked for me: relocate .metadata/, open and close eclipse, then overwrite .metadata back

The solution boils down to clean up the .metadata folder with correct contents

Answer 3

Workspaces can only be open in one copy of eclipse at once. Further, you took away your own write access from the looks of it. All the users in question have to have the 'admin' group for what you did to even work a little.

Answer 4

Check that you have enough rights to workspace directory. I got this error when I didn't have write permission to workspace.