Selection in Edit Mode not working I was doing a lot of different things in Blender recently and I could select verts with C, B and right mouse button. Now, it is not working anymore. Not even selecting edges or faces. Just the whole object by A. I guess I must have pressed any key that locks it by accident. 
I was doing some UV changes, some Mesh deformation and was tweaking things in texture paint mode. I cannot really say where it happened but somewhere later after the mesh changes were applied. 
Hope anyone got a clue what to do.

EDIT: I was streaming with OBS again and it happened again! I closed and re-opened both programs a few times, selected different .blend files and the problem still occurs. Closed everything, re-started blender first. I then switched to xSplit and it appeared again...

Have no idea how this could help but here a picture explaination. Added a cube to the current file.


 Console information added.
Figured it was the issue with a setting in the software I use to stream my work. Check if you have got anything like "Multi-Adapt-Compatibility" activated on the selected Blender source in that program. Deactivate it. Restart both programs and check if it works.