The last couple of days I can not send email - receive the error in the subject.  I receive email just fine.
The last email I sent successfully was on 02/06/2014 - never had problem previously.

I am running Windows 7
Tried removing and adding my hotmail account in WLM - no help.
Tried repairing windows essentials - no help.

I received and many windows updates on 02/14/2014, including a windows outlook 2010 update.  My guess is that one of these updates screwed something up.

Any ideas what to do?

Thanks

UPDATE - just discovered that manually typing in the email address and forcing it to not use the contact info, then the email can be sent.
Not sure why using the same email address from the contact list fails.