The Microsoft Office Services Diagnostics and Logging (MOSDAL) tool has been around for a while, certainly most BPOS customers will have come across it before… however it has now been updated to provide AD FS authentication diagnostic information so its now useful for Office 365 deployments as well!

Deploying ADFS for Office 365 is a relatively trivial process, although when things do go wrong they can be complex to troubleshoot.  If you are in this position, then get the new version of MOSAL and see if it can help you out…

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