Hi guys, I own a HP EliteBook 840 G4 with Windows 10 Professional and in the last few months I regularly got hangs of my entire system. This behaviour does not occur when using Chrome or Edge, and I did a reinstall of my laptop several times now. What happens is the following: at random moments, firefox becomes unresponsive. When looking at the task manager, I see that at these moments, Firefox is only using about 1% of the CPU, but there is this windows service called "Remote Procedure Call" which uses about 33% of the CPU. Once this service stops using 33% of the CPU, the problem gets solved (so Firefox is not crashing!). The problem is that not only Firefox is hanging, but the entire computer, which made me think if Firefox is really the problem. On my other computers however, Firefox is working as a charm... Furthermore, I found that another guy (by coincidence he is also using a HP EliteBook) is having the exact same problem (https://superuser.com/questions/1274752/rpc-hangs-windows). Does anyone have any idea how to solve this problem?? Thanks in advance! Best regards Bert