This worked for me, I got it from another post, on here and am just re-posting in case others haven't seen it.
1. Close Origin and services processes (OriginWebHelperService.exe и OriginClientService.exe).
2. Delete all files in 2 folders
"C:\ProgramData\Electronic Arts\EA Services\License"
"C:\Users\<UserName>\AppData\Local\Electronic Arts\EA Services\License"
3. Start Origin again
Fifa Ulitmate Team is not payable! FIF20 application losing focus and EA punishes you for this - terminating your game and add DNF file FOR THEIR OWN BUG!!!! RIDICULOUS!!!
I am really looking for what EA will offer to compensate what they did to their customers!!! If nothing I am buying PES21 instead of FIFA21.
I'm having the same problem too, and it really does make competitive games unplayable right now.
Info for EA Tech Support: My personal experience
Origin client minimizes games while we are playing them. I timed how often this happens, and it does it every 5 minutes like clockwork
Origin client does this even outside of a game. The client window will minimize for a few seconds, then comes out of minimize 5 or 6 seconds later.
Clearing the Origin client cache did not help me.
Restarting PC did not help me.
As stated above, this wasn't happening until the last client update.
I am running Windows 7
Same issue here and I almost pounded my fist in the desk thinking my computer caused my game disconnect. Every time I would have a tense battle moment,out of the game I go to the desktop. I deleted cache,origin folder,restarted, rebooted and same issue.
Running Windows 10 Professional
Intel I7 6800
2 NVIDIA GTX 1080 in SLI
64 GB Ram