Latest "official" news below from Google on this Blogger issue. Now can we get some news from Microsoft?
We appreciate you coming here and letting us know about this issue. It looks like this error is a result of an
authentication problem between Google and Live Writer. A long time ago, we
announced we were deprecating our old authentication system and we encouraged developers to move to
the new one (OAuth 2.0). It seems that Live Writer is still using our old system, which is causing the issue. We are currently looking into it, but we suggest that users also
reach
out to Microsoft to report
the
issue.
Thanks,
Blogger Suport Team
p.s. please disconsider the previous official announcement.