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Every time I go onto outlook it says it says No Network Connection Please check network settings and try again [2603]. I reset all of the Network Settings on the computer, and nothing has changed.
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I hope everything is going well on your end.
I’m following up on the support thread we've been working through together. I wanted to check in and see if the information I shared in my previous answer helped resolve the issue you were experiencing.
If you're still experiencing any issues or have further questions, please feel free to reach out at any time. I’m always happy to help if you need anything else.
I want to ensure everything is functioning smoothly and that your experience remains seamless.
Thank you again for your collaboration throughout the troubleshooting process.
I look forward to hearing from you soon.
Warm regards,
@Matthew S Coates said
[Outlook] says No Network Connection Please check network settings and try again
You might be running into this know bug? The fix is to install KB5085516
After you install the Windows update released on or after March 10, 2026, some users might experience an issue signing in to apps with a Microsoft account. Even when the device has a working Internet connection, a “no Internet” error appears during sign in and prevents access to Microsoft services and apps.
Welcome to the Microsoft Q&A forum.
I would like to provide you with the following information. Please try the steps below to check whether the issue can be resolved:
For example: antivirus software, VPN, 1.1.1.1, etc.
Please try switching to mobile data to check whether you are able to access the application.
If the steps above do not resolve the issue, I recommend that you open a support ticket with Microsoft Support so they can investigate the issue more thoroughly.
While waiting for a Microsoft support agent to assist you, you can temporarily use Outlook on the web to continue your work.
Steps to create a support ticket:
Note: The steps below require tenant administrator (Admin) permissions. If you do not have admin rights, please contact your organization’s IT department for assistance.
After the system receives the ticket and assigns it to a support agent, the agent will proactively contact you to help further investigate this issue.
I hope this information is helpful. Please follow these steps and let me know if it works for you. If not, we can work together to resolve this.
Thank you for your patience and your understanding. If you have any questions or need further assistance, please feel free to share them in the comments on this post so I can continue to support you.
I look forward to continuing the conversation.
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