That is the file Outlook uses to cache your mail on the system. If this diagnostic step works and fixes the error, disabling your add-ins should help prevent it from happening again. Before you change any settings or troubleshoot further, use these steps to check your connectivity and settings, and try restarting Outlook and your compute


If none of the above options work, you may want to try repairing or reinstalling your Office installation. This may fix any issues with add-ins Troubleshoot Office 365 Sync and Login Issues or other Outlook functionality. All the guides I've found online start with "go to the Tools menu". My problem is that Outlook 2013 will not start at all because it gets stuck at start-up while it tries to load the TeamViewer add-in. A temporary solution is to click on "Always enable this add-in" when the "A problem was detected with an add-in" message appear

This ensures smoother delivery even during Troubleshoot Office 365 Sync and Login Issues 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.


It even comes with features like auto-split to split large PST files and export the PST contents directly to Microsoft 365. Troubleshoot Office 365 Sync and Login Issues You can use the Inbox Repair tool (SCANPST.EXE) to diagnose and repair errors in your Outlook data file. The Inbox Repair tool checks the Outlook data files on your computer to see if they're in good shape. You can create a new Outlook Data File and drag the items in the Lost and Found folder into the new data file. After you've moved all the items, you can remove the Recovered Personal Folders (.pst) file, including the Lost and Found folde

Worst nightmare for paying Bills and Trading Card Sellers like me since the out letter slot is unavailable too, so I have to go to the post office as well to send out letters. It's been like this for 4 weeks and USPS told us at the start the "problem will be fixed soon wait 3 weeks" 3 weeks have passed. Run the Inbox Repair Tool (SCANPST.EXE) to fix them quickly. Yes ✅ You can connect with our experts on WhatsApp for quick remote support and step-by-step troubleshooting guidance. If you’d like to learn more about mailbox repair, check out our in-depth interview with Grant Wallace. Office 365 users can improve synchronization by enabling Troubleshoot Office 365 Sync and Login Issues Cached Exchange Mode under Account Settings → More Settings → Advanced.

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 users are facing syncing issues in Outlook due to corrupt Outlook data files, they must choose a professional tool, like Shoviv OST to PST Converter Tool. This software allows users to process numerous OST files at once without any size limitations. Moreover, it maintains Troubleshoot Office 365 Sync and Login Issues the folder hierarchy and metaproperties of the data when processing Outlook data files. This tool also helps users fix Outlook syncing issues by repairing OST or PST files and syncing the data smoothly. Here, we will discuss the five manual methods to fix sync issues in Outlook or OW


We decided to discontinue the outlook plugin service. I would like to know how to disable/remove the plugin for users who already have it installed. Disabled add-ins can be a frustrating issue in Outlook 2016, but there are several solutions available. Trying these options should help you fix the problem and get your add-ins up and running agai


Pit Stop - Most of our email accounts are for small retail location. We just use POP in those locations because they do not access their mail from Troubleshoot Office 365 Sync and Login Issues any other device or location. We only have a handful of people who use the their email across multiple devices at the corporate offic


Waiting ten minutes before trying again will usually resolve this, if not you should contact the IT Service Desk for support. Try going here and looking a the specific users, check if they are set to disabled. Outlook Troubleshoot Office 365 Sync and Login Issues still keeps prompting ONLY with the old school grey box. It's indicating that the MFA must be done, but nothing's opening/prompting for it. OWA, Windows sign-in, and Outlook mobile app proceed to the MFA registration and/or use. If you've tried these steps but are still running into problems, contact your organization's Help desk for assistanc


I am using TB for just three weeks now and I have issues daily when sending mail with no attachments the outgoing mail server will time out. Since the sync issue is universal it appears to be a global issue. Perhaps something in TB needs to be tweake


We had the issue where Outlook 2016 kept prompting for a password for an Office 365 user whose laptop was connected to their Office 365 account using Windows 10 Pro. The repeated issue logging in started after I enabled the modern authentication in the Office 365 administration panel. The user could use the Windows mail and calendar apps but Outlook wouldn’t connect and kept prompting for a password. Checking the Account in Word showed the correct authentication and subscriptio