4 Ways to Fix Microsoft Teams Sign-in Error

Quick Tips

• Is your internet stable? Are the date and time on your device correct? These simple things can sometimes trip up Teams.
• Corrupted data can cause login issues. Learn how to clear Teams’ cache on your device to give it a fresh start.
• Ensure you use the correct email and password for your Microsoft 365 account.

Preliminary Fixes

• Check Microsoft Teams servers: Microsoft Teams is infamous for server outrage. You can confirm the issue from social media handles or visit Downdetector.
• Change timezone: An incorrect timezone on your Windows PC can be the real culprit behind Teams login issues. To reset, go to Settings > Time & language > Date & time > expand Time zone and select a relevant option > restart the PC and try signing into your Teams account.
• Don’t use VPN: When you connect to a VPN network, you may also encounter sign-in issues when trying to log in again. To prevent this, disable any VPN network on your desktop or laptop.
• Update or reinstall the Teams app: Updating the Microsoft Teams app is often the first fix to try for sign-in errors. If that doesn’t work, reinstalling Teams can clear out any corrupted files causing the problem.
• Access Microsoft Teams from the web: Microsoft Teams is also available on the web. You can access the service from Google Chrome or Microsoft Edge and clear up meetings and the day’s schedule.

Fix 1: Clear Microsoft Teams Cache

Step 1: Close the Microsoft Teams app > press the Windows + R keys to open the Run menu.

Step 2: Type the below in the box and hit Enter.

%appdata%MicrosoftTeams

The command will open the File Explorer menu with Microsoft Teams files.

Step 3: Select all folders and files and remove them from the computer.

Restart the Windows machine and try signing in again. If this doesn’t resolve the issue, proceed to the next fix.

Fix 2: Repair Microsoft Teams

Step 1: Open the Windows Settings app (Use the Windows + I keys).

Step 2: Navigate to Apps > Installed apps > select Microsoft Teams from the menu.

Step 3: Click on the three-dot icon next to the Teams app and select the Advanced options.

Step 4: Select Repair and let Windows handle the issue in the background.

Finally, open Microsoft Teams and try to sign in again. This should fix the issue; if it doesn’t, check out the next fix.

Fix 3: Disable Proxy

Step 1: Press the Windows key, search for Internet options, and hit Enter.

Step 2: Slide to Connections at the top and open LAN settings.

Step 3: Ensure to disable the checkmark below the Proxy server and click OK.

Now, launch Microsoft Teams and log in with your account details.

Fix 4: Clear Credential Manager

Step 1: Press the Windows key and search for Credential Manager. Hit Enter.

Step 2: Scroll to your Microsoft account and click on it.

Step 3: Select Remove.

FAQs