Microsoft 365 Outlook Sync Issues Software & Applications

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However I do not use Outlook on it as much as I do on my desktop.



solve Office 365 mailbox sync delays

This blog talks about the causes behind Outlook synchronization errors and a few solutions to fix Outlook sync issues. We have shared five manual methods in this blog to resolve the Outlook syncing errors. Apart from this, we also discuss the Shoviv OST to PST Converter Tool, a professional way to repair, recover, and convert Outlook data files. This solution will be Outlook stuck updating folders solution beneficial for users who are facing Outlook syncing issues because of corrupted PST or OST files.



Turn off Windows Defender Security Center



If there's a feature you think is missing from the Mail and fix Outlook after Windows update issues Calendar apps, or if a feature in isn't working properly, you can provide feedback directly to the Mail and Calendar team. Two-factor authentication helps protect your account by making it more difficult for someone else to sign in. It verifies your identity using your password and a contact method (also known as security info). If you would like to ask me another question in the future or follow up on your current question, you can add me as a favorite Expert.

solve Office 365 mailbox sync delays

Check if two-factor authentication is turned on for your account



solve Office 365 mailbox sync delays

Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. These are the only two I've seen have this issue and I was wondering if you've seen this and figured out a 'fix'? Tempted to create a Test Shared Mailbox, but thinking that wouldn't be an accurate test for inbound mail, etc. or just actually tested by the Users at all.

Check Antivirus and Firewall Settings



  • These syncing problems usually happen because of issues like a damaged Outlook profile, poor internet connection, or a corrupted OST file.
  • Test other programs or websites to be sure Outlook is the only problem.
  • However, with one particular client no matter what changes are made these sync issue still occur.
  • This solution will be beneficial for users who are facing Outlook syncing issues because of corrupted PST or OST files.
  • We’ve had sync issues with employees from time to time however, re doing the mail profile or wiping the Windows profile usually fixes it.
  • If your password isn't the problem, you might have a certificate error.


You'll have the option to do that on your "My Questions" page by clicking the heart icon labeled My Favorite. Please reply with your results when you have completed the steps above. Additionally, you might want to make a new profile and make it the default to see if it fixes the problem. However, his OST file is not anywhere near that size it’s about 5GB. I was wondering if anyone had some insight into an issue I am having with rebuild Outlook data file quickly a client. The service typically takes less than 30 minutes to provision a user or to sync changes for a user.

Free Methods to Remove Duplicate Items in Outlook 2016



Here is the strange part I tried to remove the computer from the domain and have Outlook run from a local account for a few days. I’ve been in contact with Microsoft they had me migrate his account\data to another server this did not fix it. I’ve tried the Microsoft office uninstall tool provided by Microsoft (which deletes more items then just control panel uninstall).
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