# Can't undo something in node editor

I accidentally deleted a color ramp node that I was working all my colors on, and now when I cmd+z it doesn't do anything!

• Undoing is done with Ctrl+Z menu. You can try access undo history Ctrl+Alt+Z and proceed from there (at least you'll know whether or not undoing is possible). – Mr Zak Jul 28 '16 at 11:08
• Seems like undo is broken in the node editor completely. This should be reported as a bug. – Greg Zaal Jul 28 '16 at 11:52
• I have the same issue. Yesterday Undo worked fine in node editor, but today it doesn't. The undo history shows all changes, but nothing happens when I select something. :( – Niclas Jan 4 '17 at 19:05

1. Check User Preferences➜Editing➜ Undo➜ Step is not set to 0.

2. Try undo from dropdown menu(assume tho you have tried this alraedy)

3. Try restoring default key layout.

The above solution should work, but it seems like a bug in the Undo history for the nodes editor.

Solution

1. Switch to the 3d view
2. Make a change, press CTRL+Z (it should work)
3. Go back to the node editor, edit something, and CTRL+Z works again. Heureka!

Hit ALT+SHIFT. You switched to a QWERTZ keyboard configuration (for example DE) by accident and are too far in the 3d zone to notice or think of it. Happens to the best of us.