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Windows Credential Manager
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Secure Web Authentication (SWA) apps
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Expand the System Log for the affected user, and check the device type (There may be several devices and several entries in the System log).
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Based on the device type above, the end user needs to clear or update the credentials in the above device (Mobile, Tablet, PC/Laptop). Sometimes, the native mobile mail app will be the problem if using Office 365 as SWA
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Clear the Windows Credential Manager
