Silly question how do you go prone with mouse buttons

[KoN]

i have no No fire with LMB. with axis MP .
Checked settings and its assigned .
Also how do you go prone , No prone with SMB.
How do you assign mouse buttons ive never been able to use side mouse buttons in this game .
What am i missing here is it new patch today .

[nolaJeff]

If you have side buttons then you probably have accessory software for your mouse. You assign buttons to keys in your mouse software.

If you are having issues with left mouse button not firing it's likely because you've assigned something else to the left mouse button.

If you still can't figure it out, it's best to clear your cache, which you should have done anyway with today's update.

[KoN]

Its only in this game . My side buttons work with any other game . Crouch or Prone .But here i can not get to go prone or crouch with one side button . its very odd

[Skylaan]

I have this problem sometimes but to fix it I just check my side buttons are not assigned elsewhere as "secondary" option for another action. Sometimes the game put it on some other action by default. Right now I crouch/prone with my side buttons without any issue.

[Krupp]

Dudes really, have a look at your keyboard options. Mouse side buttons work well. In past when some1 complained about this problem I told them to check their Meele Attack and you know what? It was always a double button between section broadcast for example in combination with Meele Attack.