Outlook does not connect to server

Question

Outlook does not connect to server

DorothyErban-0007 0

Outlook email does not connect to server. We have multiple emails. The last update was on August 4 for all of the emails. We have flushed the DNS cache.

We use Outlook Classic.

It looks like there was a Microsoft update on August 2.

How do I fix this?

Chris-D 565 Reputation points Independent Advisor

2026-08-06T23:07:14.4+00:00

Hi Dorothy,

I hope all is well with you.

I wanted to follow up on the issue and see if there have been any developments since our last communication.

Please let me know if there are any updates or if there's anything else I can assist with.

Looking forward to hearing from you.
DorothyErban-0007 0 Reputation points

2026-08-07T15:32:05.1166667+00:00

Hi Chris, your information was very helpful and easy to follow. As it turns out, it was the 3rd party provider (IngramMicro) that cancelled our subscription without notice. We are a very small business and apparently they don't want to service small companies any longer. The representative I finally talked to, did walk me through purchasing new licenses online directly through Microsoft. I appreciate your help and follow up!
Chris-D 565 Reputation points Independent Advisor

2026-08-07T17:41:05.7166667+00:00

Hi Dorothy,

Thank you so much for the update. I’m glad to hear that you were able to identify the root cause and get new licenses set up directly through Microsoft.

That explains why multiple mailboxes stopped updating around the same time. Since the subscription was cancelled by the third-party provider, Outlook Classic was likely only showing the connection/sync symptom, while the actual issue was related to the licensing or service availability on the backend.

I appreciate you taking the time to share the outcome, as this may also help other small businesses who experience similar Outlook connection issues when their Microsoft 365 licenses are managed through a reseller.

Should you have any concerns or questions in the future, please don’t hesitate to reach out. Not only will I be happy to assist you, but all users in the Q&A forum will also do their best to provide support and guidance.

If you found the answer helpful, I would truly appreciate it if you could mark it as 'Yes'. This helps highlight the solution for others who may be searching for similar information in the community. Your contribution not only supports fellow users in finding the right guidance more quickly, but also helps build a more resourceful and collaborative space for everyone.

I truly appreciate your time and cooperation throughout the resolution of this matter.

Wishing you all the best.

1 answer

Your answer

Chris-D 565 Reputation points Independent Advisor

2026-08-06T23:07:14.4+00:00

Hi Dorothy,

I hope all is well with you.

I wanted to follow up on the issue and see if there have been any developments since our last communication.

Please let me know if there are any updates or if there's anything else I can assist with.

Looking forward to hearing from you.
DorothyErban-0007 0 Reputation points

2026-08-07T15:32:05.1166667+00:00

Hi Chris, your information was very helpful and easy to follow. As it turns out, it was the 3rd party provider (IngramMicro) that cancelled our subscription without notice. We are a very small business and apparently they don't want to service small companies any longer. The representative I finally talked to, did walk me through purchasing new licenses online directly through Microsoft. I appreciate your help and follow up!
Chris-D 565 Reputation points Independent Advisor

2026-08-07T17:41:05.7166667+00:00

Hi Dorothy,

Thank you so much for the update. I’m glad to hear that you were able to identify the root cause and get new licenses set up directly through Microsoft.

That explains why multiple mailboxes stopped updating around the same time. Since the subscription was cancelled by the third-party provider, Outlook Classic was likely only showing the connection/sync symptom, while the actual issue was related to the licensing or service availability on the backend.

I appreciate you taking the time to share the outcome, as this may also help other small businesses who experience similar Outlook connection issues when their Microsoft 365 licenses are managed through a reseller.

Should you have any concerns or questions in the future, please don’t hesitate to reach out. Not only will I be happy to assist you, but all users in the Q&A forum will also do their best to provide support and guidance.

If you found the answer helpful, I would truly appreciate it if you could mark it as 'Yes'. This helps highlight the solution for others who may be searching for similar information in the community. Your contribution not only supports fellow users in finding the right guidance more quickly, but also helps build a more resourceful and collaborative space for everyone.

I truly appreciate your time and cooperation throughout the resolution of this matter.

Wishing you all the best.

Answer 1

Hi Dorothy,

Thank you for sharing the detailed information about the issue.

As this is a user-to-user community forum, I do not have the ability to directly access or modify your account or service. However, I can provide guidance, recommend next steps, share applicable resources, and direct you to the appropriate support channels so the issue can be investigated further.

Based on the information provided, since multiple email accounts stopped updating around the same time, this may not be isolated to a single mailbox. The issue could be related to the Outlook Classic client, the local Outlook profile, saved authentication credentials, network/security filtering, or a recent Office/Windows update. Flushing the DNS cache was a good initial step, but additional checks are needed to identify the root cause.

Here are some steps you can try:

1/ Confirm whether email works outside Outlook Classic

Sign in to Outlook on the web and check whether new emails are showing there.
If webmail is working normally, the mail service is likely available, and the issue is more likely related to Outlook Classic, the local profile, credentials, or the device/network.
If webmail is also not updating, the issue may be related to the mailbox service or account/server side.

2/ Check Outlook connection status and working mode

In Outlook Classic, please check the status in the bottom-right corner.
If it shows Working Offline, go to Send/Receive and make sure Work Offline is turned off.

3/ Test Outlook in Safe Mode and review add-ins

Close Outlook, press Windows + R, then run: outlook.exe /safe
If Outlook connects successfully in Safe Mode, the issue may be caused by an Outlook add-in.
Open Outlook normally, go to File > Options > Add-ins > Manage COM Add-ins > Go, then disable any non-essential add-ins.
Restart Outlook and test again. If it works, re-enable the add-ins one by one to identify the problematic one.

4/ Reset Outlook credentials and refresh the Outlook profile

Close Outlook and go to Control Panel > Credential Manager > Windows Credentials. Remove saved entries related to Office, Outlook, MicrosoftOffice, ADAL, MSOID, or Exchange, then reopen Outlook and sign in again.
If the issue continues, create a new Outlook profile from Control Panel > Mail (Microsoft Outlook) > Show Profiles > Add, then add the mailbox again and test synchronization.

5/ Verify Office update/build and test network connection

In Outlook, go to File > Office Account > About Outlook and send us the Outlook version and build number. Then check for updates under File > Office Account > Update Options > Update Now.
If possible, please also test Outlook using a different network, such as a mobile hotspot. This will help determine whether the current network, firewall, VPN, proxy, antivirus, or security filtering is blocking Outlook from connecting to the server.

I hope this information is helpful. Should you have any further questions or need additional assistance, please feel free to share them in the comment below. I'm very happy to help.

I'm looking forward to hearing your thoughts.

If the answer is helpful, please click 'Yes' and kindly upvote it.

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