The upgrade tool returns the error Exception Renaming: File access error: sharing violation D:\xampp make sure folder is not in use by running applications as shown in the following screenshot:
Use the Windows Resource Monitor to end the processes that are blocking the move:
- Start the Resource Monitor by clicking Win-R, and then entering resmon.
- Click the CPU tab.
- Search for xampp in Associated Handles.
- Right-click on each xampp process and choose End Process.
- Click Start in the Update Tool interface again.