Today, I found that after the client used Edit, UNEDIT function, CVSNT crashed and could not be used.
After the exploration, after removing the Advanced-> Pretennd to Beh Unix Version option in the CVSNT Configuration window, it will return to normal.
Basically my CVS system can be used normally, for the relatively advanced CVSWeb function, there is no time to study.
I have time to study in the future!