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If your external DNS doesn’t match the internal setup, Outlook can lose track of where it’s supposed to connect. You may use outdated Office versions, which can lead to further problems. If any updates to Outlook or MS Office are pending, get them installed as soon as possible. Perfectly repair and recover corrupted Outlook PST & OST files.
How to Fix Outlook Stuck in Offline Mode Issue? Simple Methods
As is known, we can switch from Offline to Online guide to Office 365 sign-in errors Mode and vice versa in Microsoft Outlook 2010 and later versions. Once Outlook is configured with an Exchange account, the Cached Exchange Mode is enabled automatically. And thus, an Offline Storage Table (OST) file is created to save a local synchronized copy of mailbox items. You can't send or receive email until you reconnect.
My windows live mail is stuck in the work offline mode. I cannot send or receive emails using wlm. I can access my
If you set up your Outlook profile wrong, it might not log in to Microsoft Exchange or Office 365. Sometimes, people connect their system to several Office 365 environments without realizing it. That can confuse Outlook, especially with Autodiscover, and you end up stuck offline. Fix Outlook and Office365 Sync Issues Even a brief hiccup can kick Outlook into offline mode, and sometimes it just stays there until you do something about it.

Create or Repair Outlook Profile
If you're running in a virtual desktop environment, we recommend you only synchronize one month of data. If you try to do something that's not available offline, you'll get an error message, or the changes you made will revert back to what was previously saved. It’s a good idea to turn on automatic updates in Microsoft 365 Apps for enterprise.
- If it gets corrupted, Outlook might not connect and just stay offline.
- Your mailbox data is safe on the Exchange server, but if you have local stuff that hasn’t synced, export it first so you don’t lose anything.
- If it is not displayed, double-check your internet connection and re-examine it.
- It’s a good idea to turn on automatic updates in Microsoft 365 Apps for enterprise.
- Sometimes Exchange server permissions or policies get set up wrong.
- Closing Outlook and reopening it helps clear up minor glitches.
- She's dedicated to offering valuable insights and solutions in email data management, including migration, recovery, and client management.
Setup Exchange Server Account Manually
Welcome to Tales From Tech Support, the subreddit where we post stories about helping someone with a tech issue. Move it to a backup folder, like Desktop\OST Backup. There could be several reasons for your Outlook disconnect.
Role of Exchange Server and Office 365
Confusion happens when a device hooks up to more than one Office 365 environment. Autodiscover might send Outlook to the wrong Exchange server, so you can’t get to your mailbox. Now, on your keyboard, press the Send/Receive button. It should be switched from offline to online mode.
To resolve the Outlook stuck offline working issue, click "Work offline" to reset and reconnect the Exchange server. Outlook status says offline then it can happen when offline mode enabled, server connection is lost, or your internet isn’t stable. Corrupted Outlook profile, faulty add-ins or outdated version of Outlook can also be reasons to remain offline. If these manual fix Outlook after Windows update issues approaches do not work then it may happen due to damaged Outlook files. We have explained all the essential methods to fix the Outlook stuck in offline mode error.
Making a new profile tends to work better, especially if your old one has lots of accounts or long-standing sync problems. If Outlook says Working Offline and won’t budge, you’re probably dealing with a network glitch, a bad setting, or a profile error. Tackling these one by one usually gets things back on track. Hybrid setups—where you’ve got both on-premises Exchange servers and Office 365—can run into DNS or Autodiscover problems.
Recreate OST File
Start by making sure your computer has a solid internet connection. If Outlook can’t get to the mail server, no amount of tweaking inside Outlook will help. Try opening a browser or running a quick ping test to check if your network’s up. If you have to keep multiple accounts on one device, set up separate Outlook profiles for each one.