Im using 2.7.12 and windows 10, ive done this, im just gonna let it sit for like 30 mins and tell you if anything changes right now its doing the same thing
Why are you on version 2.7.12? Update Electrum to the latest version (3.2.3).
The 2.x versions now have synchronization issues, apart from them being insecure and vulnerable to certain already fixed exploits.
[1]
https://electrum.org/#download