Web browser errors such as AADSTS90072 and others can occasionally occur:

Consider creating a separate browser profile for use with different accounts such as UNC-CH or Kenan-Flagler Office 365.  Alternatively, you can erase your browser's history/cache/cookies, and sign back into our services using kfusername@business.unc.edu.

Avoid Apple Safari browser & use of workplace machines, both can cause errors with our sites/services.Use the following instructions bypass any browser errors cleanly and create separate profiles for each Microsoft 365 account (UNC's onyen@ad.unc.edu, for example) and prevent future errors while using different accounts:Create browser profile:

• Chrome:  Manage Chrome with multiple profiles - Computer - Google Chrome Help
• Edge:  Sign in and create multiple profiles in Microsoft Edge - Microsoft Support
• Firefox:  Profile Manager - Create, remove or switch Firefox profiles | Firefox Help
• Safari:  Use profiles in Safari on Mac - Apple Support

Clear cache & cookies:Note:  Change the dropdown menu to select "All-Time" or "Everything" with cache/cookies selected, otherwise you're only clearing a single hour.

• Chrome:  Clear cache & cookies - Computer - Google Account Help
• Edge:  View and delete browser history in Microsoft Edge
• Firefox:  Clear cookies and site data in Firefox | Firefox Help (mozilla.org)
• Safari:  Clear your browsing history in Safari on Mac - Apple Support