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In IntelliJ IDEA Ctrl + Alt + L is used as a shortcut to trigger reformatting of the source code. Today I discovered that this shortcut does not work anymore. What happens is, that if I hit it twice the Windows session will be locked (just as I would have used Win + L.)

Has there been a recent change to the shortcuts in Windows 10? When I try to record this shortcut again in IntelliJ it is not recognized at all.

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  • This doesn't happen for me. It might be caused by some product that you have installed. To verify, boot in Safe mode and see if this is still happening.
    – harrymc
    Jan 19 '20 at 21:53
  • How do I boot in safe mode?
    – Hannes
    Jan 19 '20 at 21:55
  • Google is your friend : support.microsoft.com/en-us/help/12376/…
    – harrymc
    Jan 19 '20 at 21:56
  • are you using a keyboard layout with AltGr? Because in Windows Ctrl+Alt is equivalent to AltGr which means you have to choose a different key combination
    – phuclv
    Jan 20 '20 at 12:20
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Another software registered that key and is capturing it before IntelliJ.

Ctrl+Alt+L is known to be registered by:

  1. Windows 10, if accessibility is on.
  2. nVidia GeForce Experience
  3. Mouse without Borders

As you explicitly state that your machine locks if you press it twice I would go with Mouse without Borders as that shortcut is specifically tied to locking machines.

Notice the underlined DISABLE, it's a red-herring as you have to click on the actual shortcut and select "disabled" there!

enter image description here

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  • 3
    Thank you so much, it was Mouse without Borders :-)
    – Hannes
    Jul 17 '20 at 7:03
  • 1
    Thank you so much, I been using Mouse Without borders for years and never realized it had shortcuts. Ironically the lock all mashines is the only one that makes sense :)
    – Griffin
    Mar 25 at 21:41

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