Visit the Admin Portal and sign in with your account.
Go to Settings>Settings.
Look for Microsoft Teams.
Enable it for user types.
Click Save.
1. Enable Forms Authentication Open the ADFS Microsoft Management Console. Click the Authentication Policies option found inside the panel to the left of your screen. Under the Actions section, select Edit Global Primary Authentication from the right-side menu. Click on the Intranet tab, and choose Forms Authentication. Select Ok to apply the settings.
2. Verify if Microsoft Teams is turned off
So, if you see recommendations for 4c7 errors in Microsoft Teams, it might be worth checking to see if Teams has been accidentally disabled. Not sure how to share your Microsoft 365 product key? Check out our quick guide! In this fix article, we found the best way to deal with the biggest modern authentication error, but you can still log in.
Additionally, your organization receives the following authentication error message: Modern authentication failed, but you can still sign in. The status of your code is 4v7. Cause This error occurs because Microsoft Teams requires forms authentication. By default, when deploying AD FS, forms authentication is not enabled for this intranet. resolution
If your company is using Active Directory Federated Services FS (the display and technicians see error code 4c7), this indicates an issue where their access credentials are not authenticated. To resolve this issue, troubleshoot by enabling forms authentication in this AD FS control panel.
How do I fix status code 4c7 Microsoft teams error?
Is your recognition code a 4c7 error? in Microsoft Teams…. SolutionIn the navigation pane, type Authentication Policies. Under Problem Area Actions, select Edit Global Primary Authentication. On the Intranet tab, select Forms Authentication. Select “OK” (or “Apply”).
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What is error code 4c7 Microsoft teams?
The issue is actually caused by users trying to insert into Microsoft Teams a network created by a corporate network that is running Active Directory Federation Services (ADFS). This will indeed prevent you from logging in, and also shows a custom error message that authentication failed here. You can still log in with your username.

Ermias is a tech writer with a passion for helping people solve Windows problems. He loves to write and share his knowledge with others in the hope that they can benefit from it. He’s been writing about technology and software since he was in college, and has been an avid Microsoft fan ever since he first used Windows 95.