Tag Archives: AADSTS50008

Fixing ADFS AADSTS50008: Unable to verify token signature. The signing key identifier does not match any valid registered keys

Today my Office 365 ADFS sign in process was broken. Skype for Business (running from Office 365) wouldn’t sign in, and when I tried to sign in to portal.office.com I ended up at a page saying: Sign In Sorry, but … Continue reading

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