Teams error code 53003 usually appears when you try to sign in, but the app blocks access due to organizational security rules. Your login technically works, but a Conditional Access or device compliance policy stops Teams from issuing the token needed to open the app.
This error shows up for a few common reasons, such as Conditional Access policies may block the app, location, device, or login method. The error might also be seen if your device does not meet compliance rules or is not properly enrolled in Intune.
Sometimes the Teams app or operating system is outdated, which might also create issues. Besides these, Network restrictions, such as VPN issues or blocked locations, can also trigger the error.
Methods to Fix Teams error code 53003
Method 1: Quick user checks
Step 1: Confirm account type
Make sure you are signing in with the correct work or school account. If you are accessing another organization as a guest, confirm that the invite is active and that you selected the correct tenant.
- Open Teams.
- On the sign-in screen, click the account name shown.
- If it is not your work or school account, choose “Use another account”.
- Enter your organization’s email and password.
Step 2: Update Teams and your operating system
Install all updates for Teams and your system. Older versions often fail security checks.
To update Teams:
- Open Teams.
- Click your profile picture in the top right.
- Select “Check for updates”.
- Let the app install updates and restart.
To Update Windows:
- Press Windows + I to open Windows Settings.
- Go to “Windows Update”.
- Click “Check for updates”.
- Install available updates and restart.
Step 3: Try a different client
Try signing in using Teams web, the desktop app, or the mobile app. If one version works while another fails, the issue is client-specific.
- Open Teams in a private/incognito browser window.
- Try the Teams desktop app.
- Try the Teams mobile app.
If one version works and another does not, the issue is app-specific.
Step 4: Clear the Teams cache
A corrupted cache often causes sign-in failures.
How to clear cache on Windows:
- Fully close Teams (right-click the Teams icon near your clock and select Quit).
- Press Windows + R.
- Type %appdata%\Microsoft\Teams and press Enter.
- Delete everything inside the following folders:
- Cache
- blob_storage
- databases
- GPUCache
- Restart Teams and try signing in again.
Step 5: Check the network and VPN
Disable your VPN temporarily or switch to a different network. Many organizations block sign-ins from unknown or risky networks.
Method 2: Check Device Compliance
Step 1: Check device management status
Open the Company Portal or your device management app and verify that your device is enrolled and compliant. Here’s how you can do it:
- Open the Company Portal app.
- Look for your device name.
- If it says “Not compliant”, tap it.
- Follow the instructions shown to fix compliance issues.
Step 2: Remove and re-enroll your device
If compliance looks incorrect, remove the work profile from your device, restart, and re-enroll it if your company permits.
Step 3: Adjust device management settings
Some accounts require the option that allows your organization to manage your device to be on. Others require it to be off. Follow your IT team’s guidance.
Method 3: Authentication and MFA checks
Step 1: Check multi-factor authentication
Complete any MFA prompt required for your account. If MFA fails or is skipped, access may be denied.
Step 2: Remove and re-add your account
Sign out of Teams. Remove the account from the app or reinstall the app. Sign in again and complete the authentication steps. Here are the steps:
- Sign out of Teams.
- Go to Windows Settings > Accounts > Email & Accounts.
- Remove your work account.
- Restart your computer.
- Open Teams and sign in again.
Step 3: Test with another account
If possible, sign in with a different organizational account. If the second account works, your main account is restricted by policy.
Method 4: Review Conditional Access (For Admin)
Step 1: Open the Microsoft Entra admin center
Admins should sign in and access the monitoring area.
Step 2: Check the sign-in logs
Search for the failed sign-in using the correlation ID shown in the Teams error message.
Step 3: Review Conditional Access details
Open the event and review which policy blocked access. You will see whether it was due to device state, app type, location, or grant controls.
Step 4: Adjust or exclude as needed
Admins may need to modify the policy, exclude the user or the app from certain restrictions, or adjust compliance settings.
Step 5: Check roles and licensing
Admins must have the correct permissions to view detailed logs. Missing roles can prevent proper troubleshooting.
Method 5: Check Guest Access Settings
Step 1: Check guest access settings
If you are a guest in another organization, the host organization controls the security rules. Their admin must review your guest access permissions.
Step 2: Request policy adjustments
If a Conditional Access policy blocks guests, the inviting organization can whitelist the user or modify the policy scope.
Method 6: Contact Microsoft support
If the sign-in logs are unclear or the tenant has a configuration issue, open a support ticket. Provide the tenant ID, correlation ID, and timestamp shown in the Teams error message. This helps support engineers trace the exact cause.
FAQs
Q: Is error 53003 related to wrong passwords?
No. The password is usually correct. The block happens after sign-in due to policy restrictions.
Q: Does reinstalling Teams fix the issue?
It can help if the problem is caused by cached data, but it will not bypass Conditional Access rules.
Q: I am a guest user. Who fixes the issue?
The organization you are trying to access must adjust the policy, since you are subject to their rules.
Q: Can device compliance cause this error?
Yes. Non-compliant or unmanaged devices are a common cause of 53003.
Q: What is the correlation ID?
It is a unique identifier shown in the error message that helps admins locate the failed sign-in event.
Ending Up
Teams error code 53003 indicates a security or compliance rule is blocking access even though your credentials are correct. Start by updating Teams, checking your network, clearing cache, and confirming MFA. If the issue continues, your IT admin must review Conditional Access policies and sign-in logs to find out what is being blocked.
With the right steps, the error is usually resolved quickly.