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Opened Nov 04, 2025 by Cara Mcmullin@caramcmullin2
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How to troubleshoot performance issues in Outlook

Repair an Outlook data file (.pst) fileExit Outlook and browse to one of the following file locations: ...Open SCANPST.EXE.Select Browse to select the Outlook Data File (.pst) you want to scan. ...Choose Start to begin the scan.If the scan finds errors, choose Repair to start the process to fix them.More items...

However, you can repair the Outlook data file (PST) using ScanPST.exe, also known as the Inbox Repair Tool. You can follow the below solutions to troubleshoot and resolve the Outlook running slow issue. This guide highlights the causes behind these issues and lists troubleshooting methods to resolve the "Outlook is running slow on Windows system" issue. If you are using an Exchange account in Cached mode, compacting your OST file may help improve performance.

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. "Outlook Not Responding" is a typical issue seen by Outlook users. There are various possible causes for this error, some of which are listed below. Here, we will go through the detailed troubleshooting solutions to resolve the Microsoft Outlook error. If you access your Official Fix Outlook guide Outlook.com account through the iOS Mail app, you may be repeatedly asked to enter your username and password.

It can be caused due to improper installation of a program, corruption in the hard drive or registry file, etc. This has nothing to do with the email client; Official Fix Outlook guide rather, it specifies bugs on your hard drive. There are no straightforward solutions available to fix this issue, however you can try some common troubleshooting techniques to fix your local hard drives. An attachment can be a file, document, image, etc. that you include while composing an email message. Many Outlook users have complained of encountering ‘Unable to open Outlook attachments’ issue.

It occurs rapidly when you receive or send messages in MS Outlook, leading to a damaged Outlook profile or encrypting Outlook(OST and PST) files. The password error issue of Outlook is the most frustrating error or glitch that users are facing nowadays. Outlook constantly shows an error regarding the password with a notification after closing it simultaneously. The reason behind the error is that users have to set passwords as the files may contain crucial information. Please install the latest updates on your phone to resolve the issue. Until you can install the Windows Update fix release, you can set a registry key that will cause Outlook to stop using the local Windows Search service.

To learn more about how to share feedback, see How do I give feedback on Microsoft Office. Note that you can quickly tell how your mail is currently sorted, by the presence of a small triangle on the field headers. Please install the Windows 10 Fall Creators Update to fix this issue. Outlook 2016 freezes when you try to preview an Excel file that's Official Fix Outlook guide attached to an email. For more information about when builds are available for their respective channels, go to Update history for Microsoft 365. We're investigating the issue and will update this page when a fix is available.

Wondering how to fix the Outlook Crashes During Startup error? Don’t worry, in this article we have explained 6 useful methods which will help you to fix this issue. Also, find out how you can repair your corrupted 0utlook data file using effective software like Remo Repair Outlook. If none of the above solutions help you resolve the Outlook crashing error, it means that your Outlook data file has been corrupted. This is caused when the program tries to access the storage file but fails to do so. However, frequent Outlook crashes also result in corruption making your Outlook inaccessible.

Currently, you can't use Outlook on Windows to edit calendars that are shared with your Outlook.com account, even if you've reconnected your Outlook.com account to Outlook. We're working to make it possible to edit shared calendars in Outlook 2016 for Windows. After installing the September Public Update, Outlook 2007 displays mixed languages in the user interface. Ensure that your Outlook recycle bin is empty and then run the Compact Now command to complete the mailbox housekeeping exercise. This, along with all other features, is conveniently available across all platforms for efficient inbox management on any device.

Occasionally, classic Outlook tries to run a process in the background. Auto-archive, sending and receiving a very large attachment, or running some of the other mailbox tools can all be done in the background. Check the status bar at the bottom of the screen to see if another process is running. If so, wait a short time (usually two or three Official Fix Outlook guide minutes) to see if Outlook starts working again.

While using Outlook, you may encounter some common Outlook issues and errors, which may create problems for users. We have discussed in detail the 10 most common Outlook errors and the possible solutions to fix them. However, when you attempt manual methods, they may cause corruption in your PST files. This kind of error usually indicates some issues on the disk where your Outlook PST file is located.

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Reference: caramcmullin2/6177611#7