Hi!

I've just installed F26 and everything works well except my VPN connection. It used to work perfectly under F25 and I didn't think to save its settings. I am not however stuck. I did a few (many?) searches and found actually different results on how to set it up. The most common results give the following suggestions:
in advanced setting enable MSCHAP & MSCHAPv2
also enable MPPE (no stateful encryption), BSD data compression, Deflate data compression and use TCP header compression.

Then in the user name field I forgot if I entered domain\username or just username and entered the domain in the NT Domain box.

Thinking it could have been a F26 issue I just burn a live install of F25 and tried, same issue.

Checking the error log using journalctl -u NetworkManager.service I am getting:
pppd[6534]: pppd 2.4.7 started by root, uid 0
NetworkManager[837]: <info>  [1500872221.0682] manager: (ppp0): new Generic device (/org/freedesktop/NetworkManager/Devices/17)
NetworkManager[837]: Using interface ppp0
NetworkManager[837]: Connect: ppp0 <--> /dev/pts/1
pppd[6534]: Using interface ppp0
pppd[6534]: Connect: ppp0 <--> /dev/pts/1
pptp[6537]: nm-pptp-service-6516 log[main:pptp.c:356]: The synchronous pptp option is NOT activated
NetworkManager[837]: Error: either "to" is duplicate, or "uid" is a garbage.
pptp[6547]: nm-pptp-service-6516 log[ctrlp_rep:pptp_ctrl.c:259]: Sent control packet type is 1 'Start-Control-Connection-Request'
pptp[6547]: nm-pptp-service-6516 log[ctrlp_disp:pptp_ctrl.c:781]: Received Start Control Connection Reply
pptp[6547]: nm-pptp-service-6516 log[ctrlp_disp:pptp_ctrl.c:815]: Client connection established.
pptp[6547]: nm-pptp-service-6516 log[ctrlp_rep:pptp_ctrl.c:259]: Sent control packet type is 7 'Outgoing-Call-Request'
pptp[6547]: nm-pptp-service-6516 log[ctrlp_disp:pptp_ctrl.c:900]: Received Outgoing Call Reply.
pptp[6547]: nm-pptp-service-6516 log[ctrlp_disp:pptp_ctrl.c:939]: Outgoing call established (call ID 10827, peer's call ID 32612).
pppd[6534]: LCP: timeout sending Config-Requests
NetworkManager[837]: LCP: timeout sending Config-Requests
NetworkManager[837]: Connection terminated.
pppd[6534]: Connection terminated.

I am wondering what I am missing as my former set up Just Worked(tm). Could I forgot adding a special package? Any hint will be super welcome!

Thanks a lot.

Fred