What you're asking for was added as an option when loading files, though I can't remember when. Steps are: Step 1: Save your blender project Step 2: File -->

What you're asking for was added as an option when loading files, though I can't remember when. Steps are: Step 1: Save your blender project Step 2: File --> New --> General Step 3: File --> Open (find your messed up blender project) Step 4: Go to the cog (settings) in the top right Step 5: Uncheck 'Load UI' Step 6: Load your blender project It will then have default UI I only remembered this was possible, not how to do it. The steps above are copied from this persons lovely succinct video tutorial on how to do it. https://www.youtube.com/watch?v=yKJLOIy7OFE https://www.youtube.com/watch?v=yKJLOIy7OFE