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Julie SteinloskiJulie Steinloski 

SharePoint Online - Can't access external source - External data source is unavailable because of an error

Hi everyone ... I found a post here (https://success.salesforce.com/answers?id=9063A000000iXQIQA2) with several people who are having the same problem I am with SharePoint online setup.  I thought I'd repost to hopefully catch some brilliant person's eye. 

I've followed all of the documentation (haven't found any more recent than 2017) to no avail.  I thought I would repost the question to see if there are any definitive solutions.  Here's what I'm getting.  

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Best Answer chosen by Julie Steinloski
Julie SteinloskiJulie Steinloski
After much headbanging, I found the best video.  https://www.youtube.com/watch?v=SMLtxs0E9Vc.  It's old, but it did the trick!