I am on PC and I cannot shoot any weapon using LMB. I have tried with 3 different mouse, nothing worked for me. On a different PC it works. If I switch the button to fire my weapon it works, but the LMB does not work at all. My internet speed is around 1Gb so I don't have an issue with that. Other games work perfect. I have this issue for a long time. Please help.
Hey there @kayinne, thanks for taking the time to get in touch. I'm sorry to hear that you have been experiencing problems shooting with the left mouse button on The Division 2. Could you please first go through this technical troubleshooting article for me ensuring you have completed all of the steps? I have shared this article, as you might have a third party software installed that is interfering with the controller and preventing it from working fully. The steps included could help amend that.
If you have gone through those steps, but you still encounter problems, could you please perform the following:
If you have any further questions or you experience any other issues, please do not hesitate to reach back out.
Hey there@kayinne, thanks for taking the time to get back in touch and share this update, I'm glad to hear that you're no longer experiencing issues! If you have any questions or run into any other issues, please do not hesitate to let me know. 
devtrackers.gg