Update 5/20: Microsoft now considers these authentication problems to be resolved, having released “out-of-band” updates on May 19, as described here. Microsoft this week acknowledged possible ...

It appears many Mail users are having authentication problems in which they are prompted for the username and password every time a message is sent (either manually ...

Microsoft on Thursday declared that authentication problems associated with its May monthly updates have been resolved via newly released updates. That notion comes in a May 19 update to a public ...