Avast is blocking Windows Live Mail

Hello to all here,
I am an newbie. Since yesterday my Avast free is blocking my Windows Live Mail from getting my Mails (OS WIN 8.1).
I deinstalled and reinstalled Avast, then it worked for a short while.
This morning, WLM could’nt get mails anymore.
Does anyone has a solution I could try?
Please excuse my bad english…
Greetings
Uwe

I can download my emails from wlm normally.But since a week when Windows live mail downloads all the emails, on the event viewer appears many schannel errors 36887. I investigate the problem and is due to Avast. It could be possible that the Mail Shield is generating this problem?

Ill be very grateful if you help me.

Many thanks