How to fix
Microsoft Teams error 9hehw
on Windows

What does error tag 9hehw in Teams mean? I can't log in because of it, which is bothersome because I need to use Teams for my school online lessons. I'm on Windows 10, by the way.

Understanding Microsoft Teams error tag 9hehw on Windows

Microsoft Teams is a crucial communication and collaboration application by which users are able to join together using chat, video chats, and shared files across different devices. Despite this, some users encounter difficulties while using the app, primarily on mobile phones and tablets.

One of those issues is Microsoft Teams error 9hehw, which might prevent you from logging in or using the application smoothly. Unlike what you might otherwise find in a Windows issue, this only occurs on mobile platforms such as Android and iOS. If this is the issue you are dealing with, do not worry - there are pragmatic solutions to get you back at work.

The Microsoft Teams error 9hehw will typically show whenever the program on your smartphone has connectivity or login problems. You might get an error like, "We weren't able to connect. Sign in and we'll try again," or the app simply fails to load. The error mostly comes up during sign-in or if the app has not been used for a while, so it is really frustrating when you do need to use Teams for work or group use on the go.

Examinations show different causes for Microsoft Teams error 9hehw on tablets and mobile phones:

• Incorrect time and date. Time-based authentication schemes are employed in Teams. Your device's time clock should be correct for a successful authentication since it will get rejected otherwise. 
• Conditional access policies. Enterprises possess security policy measures that restrict access from some devices or request certain login prompts, which will hinder the application.
• App or cache problems. An outdated Teams app or even corrupt cache files can disrupt connectivity and functionality and cause the error to manifest.

Don’t worry - there are ways to tackle this, including steps such as updating the app, ensuring time and date settings are correct, clearing app cache, reinstalling the app, and more. You will find all the detailed instructions below.

If you are dealing with persistent issues, a tool like [d1] could be your next step. It’s a repair utility that digs into system issues, potentially smoothing out whatever’s tripping up Teams behind the scenes.

Fix 1. Check Microsoft 365 service status

If Microsoft’s servers are experiencing outages or maintenance, error 9hehw could occur regardless of your setup. Checking the service status confirms if the issue is on their end.

• Open a browser and go to the Microsoft 365 Service Health page.
• If you see that Microsoft 365 services are down, you should wait till they come back up.
• Retry logging into Teams after a few hours.
• If no issues are reported, proceed with other solutions.

Fix 2. Check time and date settings

Make sure your device’s time is set correctly.

• Open Settings on your device.
• Android: Go to General management > Date and time. iOS: Go to General > Date & Time.
• Toggle on Automatic date and time. If it’s already on, toggle it off and back on.
• Open Teams and try logging in.

Fix 3. Update the Teams app

Ensure you’re using the latest version of the Teams app.

• Launch the Google Play Store or App Store.
• Search for Microsoft Teams.
• Tap Update if an update is available.
• Open the app and test it.

Fix 4. Clear app cache

Remove corrupted files that might be causing issues related to error tag 9hehw.

• Android: Go to Settings > Apps > Teams > Storage > Clear cache.
• iOS: Uninstall and reinstall (see Fix 5).
• Launch Teams and check if the error is gone.

Fix 5. Sign out and sign back In

Refresh your session by signing out and logging back in after restarting the app.

• In Teams, tap your profile picture.
• Choose Settings and then scroll down to find Sign out.
• Close the app, reopen it, and sign in again.
• See if it works.

Fix 6. Reinstall the Teams app

If the problem persists, uninstall Teams and reinstall it from your app store.

• Android: Settings > Apps > Teams > Uninstall.
• iOS: Press and hold the Teams icon, then tap Delete App.
• Reinstall from the app store and log in.

Fix 7. Check for Conditional Access Policies

If your organization uses these, reach out to your IT admin to confirm your device meets the requirements or to adjust any blocking policies.

• Contact your IT support team.
• Ask if policies are blocking your device.
• Follow their advice to resolve it, then retry Teams.