Datatips (mouse hover over variables in debug mode) not working in Visual Studio 2012 / Win 7 64bit

Question

When I hover my mouse over a variable when debugging a C# app in Visual Studio nothing popups. I expect to see the value of the variable (aka datatips). I\'m running Visual

Answer 1

THis helped me: you need to open in VS Tools | Options | Debugger | General and enable the flag [Use Managed Compatibility Mode].

Answer 2

This 3 combinations solved it for me.
- Make sure you are in Debug mode
- Uncheck/Disable Use the legacy C#,VB.NET evaluator (Tools->Options->Debugger)
- Make sure Enable Just My Code is checked.

Answer 3

Deleting the .vs directory and restarting worked for me.

Answer 4

Before running the application check you are running it in Debug mode. If set to Release mode change it to Debug and then run. The debugger will then provide the data-tips.

Answer 5

I had this same problem. My project had somehow gone into Release mode, so I changed it back to Debug mode via Build|Configuration Manager and it was working again, the datatips reappeared.

Answer 6

I realize this is an older post. But I have the exact problem in Visual Studio 2019. The funny thing is that datatips are not showing on my external screens. But if I drag Visual Studio to my laptop screen, it shows without problems. Dragging it back to one of the two external screens and it won't show.

I also have a problem that the Project Properties and Team/Source Control Explorer does not show anything but white content until I switch to another tab and then back. Then it loads. I have tried enabling GPU support in Windows, but nothing.

Has anyone had the same experience?

I will of course try all of the suggestions for the datatips thing, as that's really decreasing my effectivity.