How to Troubleshoot the Office 365 “No Internet Connection” Error in Windows 10

  • To fix Office 365 “No internet connection” error, you need to run these 2 commands and reset Winsock.
  • The error message appears even when you have an active internet connection.
  • In some cases, the error message may appear because of your system’s Ethernet adapter.
  • Some users report switching to public DNS seems to solve the problem.

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In this blog, we discuss Outlook search issues, such as ‘Outlook search does not work’ and ‘returns no or incomplete results’. In addition to describing how to fix Outlook problems, the article also describes workarounds for Microsoft Office 365, Outlook 2019, 2016, and Outlook 2013.

If Microsoft Outlook cannot communicate with Microsoft Exchange Server, it displays a message stating “We are unable to connect right now”.

To fix Office 365 “No internet connection”, you need to run these 2 commands and reset Winsock. (IP configuration /flush DNS and Winsock reset). Let’s take a detailed look at how to fix the Office application internet connection error if you are trying to open Office and encounter the 365 no internet connection error.

In this Techquack article, we will discuss different ways to fix Office 365 “no internet connection” error.

What causes the “No internet connection” error in Office 365 on Windows 10

What causes the "No internet connection" error in Office 365 on Windows 10

In spite of the fact that you can still use the app without an Internet connection, some features will not work if your connection isn’t active. Although you can still use it and do what you want, you will be unable to access the error message. In the case of OneDrive syncing, for example, the error message will prevent your files from automatically syncing to the cloud.

Outlook We Are Unable To Connect Right Now

However, this is a Windows problem, despite the fact that this error appears in Office. A misconfigured VPN, an incorrectly blocked or intercepted web proxy, or restricted location awareness settings could cause Windows to think it has “Limited Internet” or “No Internet.”

As it turns out, there are several possible reasons why this error message appears, so let’s explore them in more detail below.

Outlook Is Not Connecting To Server

Steps for connecting to the Microsoft Exchange server using SSL are as follows:

Third-party VPN: It turns out that the most obvious cause of the error message is a third-party VPN. In some cases, the VPN you installed and MS Office are not working properly, preventing Office from establishing an internet connection with its servers. As a result, you’ll see that error message. This problem can easily be solved by disabling the VPN you’re using.

Ethernet Adapter: In some cases, the error message may appear because of your system’s Ethernet adapter. It turns out that in some cases, your Ethernet adapter is faulty, preventing the Office from connecting to the Internet. This problem can easily be solved by simply restarting the adapter.

List of networks and location services: Finally, another reason for the error message could be two network services, which can be found in the Windows Services window. As in the case of the Ethernet adapter, simply restart the corresponding network services and it will work again.

In some cases, Office will only start in offline mode, resulting in an error message. Before we proceed, it is important to note that in some cases, Office will start in offline mode only.

Try connecting to the Internet by selecting the File menu, then the Account tab. You’ll find an option for this at the bottom-left corner. If that doesn’t work, try the methods below.

How to fix the “no internet connection” error in Office 365 on Windows 10

Updated: February 2024

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Outlook Disconnected From Server

In this case, your Outlook will display a message saying that it has been disconnected from your Exchange server or internal mail provider.

Could Office 365 be configured to connect to the existing internet from the other end, as the PC does have an internet connection?

How to fix the "no internet connection" error in Office 365 on Windows 10

Switching to public DNS

We’ll look at how to switch to a public DNS like Google’s if switching to a private DNS does not work.

  1. “Run” can be accessed by pressing Windows + R.
  2. Click OK and enter ncpa.CPL.
  3. By selecting Properties after right-clicking the network adapter, you will be able to view its properties.
  4. Select IPv4 by double-clicking it.
  5. The following DNS address should be entered in the Use the following DNS server address checkbox.

Disable IPv4 checksum unloading

The patch has been reported to be helpful by many users

  1. Ensure that Windows+R are held down simultaneously
  2. PowerShell should appear in the Run dialog box. Press Ctrl+Shift+Enter to execute it.
  3. The command is as follows:

Adapters for Ethernet:

Using the following commands, you can disable IPv4 checksum offload with the display value “Disabled” set to the low value.

Tip: It may happen that the connection is interrupted for a few seconds.

Disconnect and reconnect the network adapter

  1. Press Windows+R together
  2. Press Enter to launch ncpa.CPL.
  3. Select deactivate from the menu when you right-click the network adapter.
  4. You can now enable the option by right-clicking again.

Flush DNS and Reset Winsock

  1. Make sure that you have administrator privileges on the command prompt.
  2. Following is the sequence of commands you should enter at the command line

IP configuration /flush DNS
The RegisterDNS command can be found by running IPconfig /registerdns
Resetting Winsock catalogs with NETSH
A reset log is produced when NETSH int ipv4 resets the IPv4 address

Ensure that the changes are effective by rebooting the system.

Resetting the IP address

You can usually solve the problem by resetting your system’s IP address.

  1. The Run window will appear when you hold the Windows key and the R key together
  2. The command prompt will open after you type cmd and hit Ctrl+Shift+Enter simultaneously.
  3. Click Yes when asked for permissions by UAC.
  4. Here are the commands you need to type at the command prompt
  • Release IP configuration
  • ipconfig /renew

New IP addresses are assigned by these commands.

Restore Office 365

  1. Keep Windows + R pressed.
  2. You can run appwiz.CPL in the Run window by typing it in the Run box.
  3. Then click the Edit button next to Microsoft 365 in the Programs and Features window.
  4. You can accept permissions by clicking Yes if the User Account Control window appears.
  5. The Quick Fix option will appear in the dialog box.
  6. You can repair your computer by clicking Repair.
  7. The Office programs will be restored if you follow the instructions displayed.
  8. You can fix the problem by using this solution if the Office 365 app is corrupt.
  9. The problem should be resolved if you restart the application.
  10. To restore the Office applications, try restoring them online rather than via a quick fix.
  11. The error should be corrected after restarting the application.

RECOMMENATION: Click here for help with Windows errors.

Frequently Asked Questions

In some cases, the problem with connecting to Outlook is caused by software conflicts. If you use multiple programs on your computer, it's possible that one of your applications conflicts with Outlook and causes an error. Make sure there are no unsaved files before continuing.

This error can occur for a number of reasons. The most common cause is a change in configuration settings, such as the IP address, which can cause problems connecting your router to the Internet. Any program, including an operating system update, can cause this problem.

In Word, go to File -> Options -> Trust Center -> Trust Center Options -> Privacy Settings and check the "Allow Office to connect to the Internet" box.

Office 365 works in offline mode. You will need to connect to the Internet every 30 days to maintain your subscription. Office 365 will notify you when it is time to connect.

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Mark Ginter is a tech blogger with a passion for all things gadgets and gizmos. A self-proclaimed "geek", Mark has been blogging about technology for over 15 years. His blog,, covers a wide range of topics including new product releases, industry news, and tips and tricks for getting the most out of your devices. If you're looking for someone who can keep you up-to-date with all the latest tech news and developments, then be sure to follow him over at Microsoft.