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Hello Thank you for your question and reaching out. I can understand you are having query\issues related to Teams . Please try to re-registering the device with Azure AD. On Your PC run this cmd from elevated prompt. Dsregcmd /debug /leave Go to Credentials Manager -> Under the ”Generic credentials” section, locate msteams_adalsso/adal_context_segments -> Right-click and delete this generic credential. Reboot your PC Dsregcmd /status Start Teams. --If the reply is helpful, please Upvote and Accept as answer--