can't access comcast email - XFinity

For can't access comcast email, XFinity-Comcast internet. When I try to access the internet through Chrome (clicking on the icon at the bottom of page), it will take me to a page that has the following error message:
[h=1]Bad Request[/h]Your browser sent a request that this server could not understand.
Size of a request header field exceeds server limit.
I can access sites through using "my favorites" but can't access my email! Help!!! I've cleared cache, etc, still nothing!