BobDoom

So its definitely the VPN. if its off entirely, no problems. So, I've set a tunnel for DCSWorld.exe to go around my VPN, and everything has been fine now ever since. Thanks to Rudel_chw and Zildac for pointing me in the right direction!

Alright, here's and update. I did as you suggested, and enabled the VPN once in game, all went well. ran it for while with no issues. THEN a new thing happened! instead of simply getting booted to the debrief screen, I got an in game alert window that stated "Mission must be activated." Was unable to use the green end mission button, could use cancel. Might be different since I was running a purchased campaign this time. Ultimately I had to exit the game entirely before I could start that campaign again otherwise I would get the same "Mission must be activated" alert. I had to bail fast (5 month old woke up from his nap) and I didn't think to grab any logs or screenshots. I will replicate the problem before the end of the day however and try to get those data points posted here. Once I do that, I will likely just run DCS without the VPN enabled for giggles and see what happens just to be thorough. Also, I'm not above questioning the stability of my system... my rig is... dated. But dated like a rebuilt classic car is dated. EDIT: repeated the problem as described here. VPN was completely on from the start. Logs should be attached now. dcs.log

Alright, here's and update. I did as you suggested, and enabled the VPN once in game, all went well. ran it for while with no issues. THEN a new thing happened! instead of simply getting booted to the debrief screen, I got an in game alert window that stated "Mission must be activated." Was unable to use the green end mission button, could use cancel. Might be different since I was running a purchased campaign this time. Ultimately I had to exit the game entirely before I could start that campaign again otherwise I would get the same "Mission must be activated" alert. I had to bail fast (5 month old woke up from his nap) and I didn't think to grab any logs or screenshots. I will replicate the problem before the end of the day however and try to get those data points posted here. Once I do that, I will likely just run DCS without the VPN enabled for giggles and see what happens just to be thorough. Also, I'm not above questioning the stability of my system... my rig is... dated. But dated like a rebuilt classic car is dated.

alright, well considering I have done literally everything else one can think of at this point, ill have a look at the VPN IPs before and after, and before I commit to a hour long mission, maybe just turn off the VPN before hand. nothing quite as disheartening as being 45 min into a flight only to get smacked into a debrief, lol.

interesting. yeah, I am and have been using expressVPN for the last 1800 hours of playtime. you think the VPN is causing a problem?

Here is the log from the latest instance of this issue. dcs.log

As of late August, any mission either from mission menu or the campaign menu will randomly end to the debriefing screen with no cause. Can be flying around casually, and poof! Debriefing screen. Does not appear to be confined to any one module as its occurred in every aircraft ice attempted to fly. I have Uninstalled and re-installed DCS, removed all mods, and checked game file integrity via steam, no resolution so far. Issue presents in both open beta and stable release versions. Any tips or info would be appreciated.