"The request failed. Please try again error creating a Skype meeting within Outlook 2010

"The request failed.  Please try again error creating a Skype meeting within Outlook 2010

error message: "The request failed.  Please try again.  Make sure that you are signed into Skype for Business."

Found a solution for this issue.

  It seems to be pertaining to the auto complete cache.   Clearing this cache either by manually clearing it  from the outlook options menu --> mail  --> clear auto complete cache.  or by starting outlook with the  /cleanautocompletecache switch. 

It resolved it on the few users that have been having this issue.