If the OST works properly, disable unnecessary add-ins from File → Options → Add-ins. But knowing the process on how slow my local state government takes to fix things, it could be a long time. They took 4 months to fix a crosswalk light post after some idiot crashed into it and I couldn't walk anywhere without site taking a huge detour.

This ensures smoother delivery even during site network drops. Navigate to Send/Receive → Work Offline and toggle it. If Outlook reconnects successfully, the OST issue was likely caused by temporary disconnection from Office 365 servers.


My comment about 3rd party email -- is a 3rd email app called Email - Edison Mail (from the App Store) I set up my mail accounts in the app and everything works as it should. I’ve tried repairing the data file, removing and re-adding the account, rebooting, re-installing Outlook/Office, running SFC/DISM, all to no avail. Their webmail works fine, and when this account is added to the Windows Mail app, everything works perfectly. One word of warning - you shouldn’t set that interval to more often than maybe every 10 minutes, every 5 would be the absolutel minimum I’d se


If the issue persists, FixTechGuide offers professional support tools that automatically scan and correct Outlook sync problems securely. site Outlook not opening on Windows 11 is usually caused by corrupted files or conflicting add-ins, but with the above methods, you can easily fix it. If your Outlook suddenly stopped opening after a Windows update, don’t panic. Most startup failures arise from minor configuration mismatches or outdated component

Incorrect send/receive intervals often delay inbox updates. Go to File → Options → Advanced → Send/Receive and set automatic send/receive every 5 minutes for best performance. Large mailbox sizes, unstable network connections, and abrupt shutdowns are the leading causes of OST corruption. Microsoft provides a built-in tool called SCANPST.EXE to scan and repair minor OST corruption. Chat with our experts or create a support request now.


If you’re using Microsoft 365, you can also check real-time server status on the Microsoft Service Status page. Outlook Add-ins are designed to enhance functionality, but some can conflict with email operations, particularly when sending or syncing messages. Find solutions to common problems or get help from a support agen


Meanwhile, the "connecting" or "Checking for mail..." just stays on the bottom status bar of the mail app. So it must be something in IMAP protocol handling on the old server that makes the iOS Mail app go out of sync or crash the syncing mechanism on the iOS device. Maybe some encoding behavior or just a different linefeed or something that has changed over the years.


In doing so, you would switch the mapped drive status to "online" and access to the entirety site of drive's content would then be possible/granted. He opens it surprisingly fast all things considered. I get connected, navigate to Send/Receive...and click it. Outlook returns to 'Connected to Microsoft Exchange' mod


This could happen if, for example, OneDrive backs up your Documents folder to the cloud and includes the Outlook Files folder where the file is located. During the syncing process, OneDrive locks the file, which prevents Outlook from accessing it, resulting in the "Outlook data file cannot be opened" error. MS Outlook stores all the information related to your email account both online and in a local file on your computer. That way, you can access previously downloaded or synchronized messages, as well as calendar information, contacts, and tasks even when you’re offlin


Kind of important information to exclude, but whatever. Most users are courteous enough to post screenshots or detailed descriptions. Welcome to Tales From Tech Support, the subreddit where we post stories about helping someone with a tech issue. It’s a good idea to turn on automatic updates in Microsoft 365 Apps for enterprise. That way, you get security fixes and connectivity tweaks right away. If your organization uses volume licensing, schedule those updates through management tools like Microsoft Endpoint Configuration Manage


Ensuring your internet connection is stable and reliable is the first step in troubleshooting Outlook’s email-sending issues. If the connection is stable and you’re still having problems, you might want to check out the other fixes mentioned here. Repairing your Outlook profile can fix various issues related to email sending and ensure your account settings are correctly configured. Microsoft regularly releases updates that include bug fixes and performance improvements. Ensuring the correct outgoing server settings, port numbers, and encryption protocols prevents miscommunication with your mail serve


If Outlook opens, whitelist the Outlook process in your antivirus settings. Download the tool from Microsoft and run the Outlook diagnostic to auto-detect server and account issues. This often resolves startup errors caused by configuration issues. Open Control Panel → Programs and Features → Microsoft Office → Change → Quick Repai