How to repair corrupted Outlook OST files?

If your Outlook data file is damaged, you’ll need this tool. It’s built into Outlook and helps repair PST and OST files. The steps to access the repair tool vary depending on your operating system. If nothing works by now, you will have to consider adding a new Outlook account. While you shift all data content of the previous account to the new one, the process takes multiple steps. To understand more about the method, look across all stages of adding a new account on Outlook.

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.

Whether your Outlook is unresponsive or frequently crashes, this program can help you troubleshoot and fix the root cause of the problem with ease. If you’re experiencing any issues with Outlook on your Windows 10 system, there’s no need to panic. When Outlook is not working, or Outlook keeps crashing pondering upon the cause won’t be of use unless it is a regular issue. I would encourage readers to fix it by trying the solutions in this article.

When you do this, your Outlook fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ might have opening problems. For this reason, you should always turn off Compatibility mode for Outlook. If you restart it successfully, it will show you that one or more add-ins are defective. Now, it’s time to uncover them by the elimination process.

You can start Outlook in safe mode, disable your add-ins, and then try to open Outlook normally. If fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ you can’t open Outlook, or Outlook disappears or crashes, one of your add-ins may be to blame or you may need to update Outlook. If you are having problems with Outlook, there are a few things we can help with to get you back to sending and receiving your email.

You can view more than one calendar at a time, add other calendars, choose which calendar to display, and create new calendars. Select More to see additional actions—for example, an option to print a message. If you want to learn about printing, see Print attachments received in email messages. In the Search box, type the name or email address of a person or a keyword you want to search for, and press Enter or select .

Outlook being a great platform, still encounters some glitches and errors like Outlook 365 not working on Windows 10. This error leads to less productivity, especially if Outlook 365 is your default email client. The only way to resolve this issue is to repair Outlook 365 in Windows 10. But the fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ problem arises when you don’t know the correct way of doing it. If this method works, try disabling your add-ins and any recent customizations that you may have made in Outlook to permanently fix the issue.

Over the last couple of weeks it will not open normally (not even in safe mode) and I am having to do the windows repair option in settings. I have also tried the Classic Outlook Profile Set Up Troubleshooter. Trouble shooter came back as there was a problem running the trouble shooter, try looking for other solutions. When Outlook does open, it will send mail fine one minute and then the next minute it will not send any mail. The only thing is to know how to overcome them when they arise. Whether it’s defective add-ins, frozen Outlook, faulty data files, and many others, fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ you can manage all these problems yourself.

To start the Inbox Repair tool manually, locate one of the folders by using Microsoft Windows Explorer, and fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ then double-click the Scanpst.exe file. As the process concludes, you can preview all repaired content across the platform. On deciding which content you want to save, set the desired path on your device. While handling it, you might have accidentally changed some unwanted settings. There is another situation where your application’s cache may be full. For both conditions, you have to access your Outlook settings and make appropriate changes to repair Outlook Mac.

You may not expect this behavior, but the removal of the item is appropriate given the circumstances. Also, this specific kind of situation is rare, and it will always be entered in the ScanPST log file.

If you can’t start the Inbox Repair tool automatically or manually, you may try to repair your Office application. When you are online, Outlook synchronizes the data in the OST file with the Exchange Server, ensuring that you have the most up-to-date information. This synchronization occurs automatically and transparently, allowing you to work seamlessly between online and offline environments.

Keep in mind this does take a while, and it’s usually best done after the user has left for the day. Sometimes you’ll open Outlook and fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ then for no apparent reason, it will freeze or shut itself down. There are quite a few different causes for this, but one of the most common is a defective add-in. Here’s how to disable add-ins in Outlook even when it keeps crashing. Find solutions to common problems or get help from a support agent. If Outlook issues persist, consider reaching out to Microsoft Support or your IT administrator for advanced troubleshooting.