I'm not a native English speaker. I'm sorry if I didn't explain the problem
clearly.
I'm using Windows 10 Enterprise Insider Preview (I'll use Win10 instead below).
Until yesterday, I'm using Win10 build 11102, and Git for Windows works well.
But today I upgraded my system to Win10 build 14251, then something wrong
happened.
I opened a "cmd" in my repository and entered "git pull", then a dialog window
appeared, saying "Git for Windows has stopped working".
The version of the git on my system was 2.6.4, and I found out that the latest
version was 2.7.0.2. So I downloaded a installer from "https://git-scm.com/". I
opened the installer, but as soon as the installation finished, the same error
dialog appeared. I closed the dialog, but it appeared again, so I closed it
again. I opened a "cmd" and entered "git", of course, it crashes and the error
dialog appeared.
By the way, I installed GitHub for Windows on my system and it crashes too when
I pressed the "Sync" button in it.
In my surprise, GitHub Extension for Visual Studio works correctly.