Microsoft new Teams says "No Network connection. Please check your network settings and try again [2603]"

Question

Hi,

I started to have this issue from yesterday when switching to the new Teams. What I have tried so far

1. Checked my internet connection, that I can confirm I am able to access other web sites which means there is no issue for my local network connection.
2. Cleared Teams cache, deleted all under %appdata%\Microsoft\teams
3. Uninstalled Teams and installed again.

It's weird that the new Teams works fine if VPN connected, however it does not work when disconnecting VPN. I believe there's some misconfiguration in my local, but I have no clue how to figure it out, could you please give some help? thanks.

Answer 1

Hi, Xi. I am an independent advisor, trying to help other users in the Community with my experience in Microsoft products. Please note that I am a user like you and don't work directly for Microsoft.

I am sorry you are having trouble with Teams. As a user, I understand this can be very frustrating. I deeply understand the issue has affected your work, rest assured I will try to provide you with a solution.

I take it you're using a Windows device.

I experienced the same problem, and tried a host of things, including those you mentioned in your description. But nothing worked for me until I tried a solution i stumbled upon on another thread; https://answers.microsoft.com/en-us/msoffice/forum/all/no-network-connection-please-check-your-network/b41f6132-fbd5-4227-beb8-988baf15cfe6 the solution was from Sylvester.

"Enable TLS 1.2 on the machine.

Go to internet options > Advanced > Check the TLS 1.2 option. Then restart the computer. This would fix the issue."

This worked for other users as well.

I hope this helps you. Let me know if this contradicts what you need. I remain helpful in answering any more of your questions.

Warm Regards

Femi

Answer 2

Thank you for your response, checked that TLS 1.2 already enabled in my local

Answer 3

If that is the case, you can try and implement the following steps as highlighted by Shalom in the same article.

"Here are some steps you can take to try and resolve this issue:

1. Restart Your Computer: Sometimes, a simple restart can help resolve activation issues. Try restarting your Windows 10 PC and then attempt to activate Office again.
2. Run Office Activation Troubleshooter: Windows 10 includes a built-in troubleshooter that can help diagnose and resolve activation problems. To run it, go to "Settings" > "Update & Security" > "Troubleshoot." Look for an option related to Office activation or product key issues and follow the on-screen instructions.
3. Check Your Office Subscription: Ensure that your Office subscription is active and that you have a valid license. If your subscription has expired, you may need to renew it to continue using Office.
4. Use Office Repair Tool: Microsoft provides an Office Repair Tool that can fix many common Office issues. You can download and run this tool from the official Microsoft website.
5. Use the Office Activation Wizard: Open any Office application (e.g., Word) and go to "File" > "Account." From there, you can choose the "Activate Office" option and follow the prompts to activate Office using your product key or Office 365 subscription.
6. Check Your Firewall and Antivirus Software: Sometimes, firewall or antivirus software can block Office activation. Ensure that your security software isn't blocking Office from accessing the internet.
7. Reinstall Office: If none of the above solutions work, you may need to uninstall and then reinstall Office on your Windows 10 PC. Before doing this, make sure you have your product key or Office 365 credentials handy."

Warm Regards

Femi

Answer 4

For anyone still having this issue, make sure this setting is enabled:

Control Panel > Network and Internet > Internet Options > Connections > LAN Settings > Under Automatic configuration, make sure Automatically detect settings is turned ON.

This has always fixed this issue for me.

Answer 5

After trying everything else, what finally did it for me was to disassociate my Windows professional account (not Office, really the main Windows account) on my pc and associate it back.