Keyboard shortcuts which start with Alt (such as Peek Definition Alt+F12) stopped working on Visual Studio 2015.
When I press Alt key, those underscores appear under menu items (which is default behavior of windows) as shown on image
Other keyboard shortcuts such as F5, and all the ones starting with Ctrl are working properly.
I've found a lot of answers about keyboard shortcut conflicts after installing ReSharper, but I haven't installed it.
Any suggestions?
Keyboard shortcuts could fail to work if you don't press the key combinations at the same time. If you are having difficulties pressing multiple keys at the same time, you should enable Sticky Keys. This Windows 10 feature allows you to press the shortcut keys one after another.
On the menu bar, choose Tools > Options. Expand Environment, and then choose Keyboard. Optional: Filter the list of commands by entering all or part of the name of the command, without spaces, in the Show commands containing box. In the list, choose the command to which you want to assign a keyboard shortcut.
Make sure you have enabled the App Switching feature Press Windows + I to open Settings, then click on System. Choose Multitasking from the left, and then select the desired option from the two drop-down menus about Alt-Tab.
In my case it was Nvidia's "In-Game Overlay". In case you are running this software, try disabling this in the "Geforce Experience".
The image below shows where to do this:
After long troubleshoting and googling I've combined multiple things and it worked:
Updated the Visual Studio
Resetted keyboard layout with following steps:
2.1. Make sure you have no additional keyboard and displays connected (this could be optional step, but without this the solution was not
working for me)
2.2. From menu open "Tools" and select "Options"
2.3. From left side select "Environment" and click on "Keyboard"
2.4. Change the mapping scheme to "Default"
2.5. Click on "Reset" (You'll be promted something then click on "Yes") and OK
2.6. And now restart the application
Also by the way installed ReSharper and uninstalled (this also plays keyboard shortcuts of Visual Studio) and retried second step
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