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  • Dianne Santo
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Created Feb 23, 2026 by Dianne Santo@xoudianne28276Maintainer

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If the PST file is larger than 2 GB, Inbox Repair Tool may stop responding during the repair process. However, if the PST is 2 GB or smaller but the Inbox Repair still fails to repair the PST file, it indicates a severely damaged PST file. Often, the Inbox Repair tool not responding issue is an indicator of severe corruption in the PST file that can’t be repaired with the help of this proprietary too

If you have email messages in an email program, you must import your email messages and addresses to the new user profile before you delete the old profile. If everything is working correctly, Solve365 Issues support you can now delete the old profile. To create a user profile, you must first create a user account. We recommend setting Windows Update to automatically download and install recommended updates. Bug fixes, new features, and performance enhancements are released regularly. As @ode2joy ​ said, clearing out the user’s profile usually works, which is a more thorough procedure than just deleting .nst and .ost file

Performance may be decreased if you use the Outlook AutoArchive feature or sync to Outlook with a mobile device. For more information, see How to install the latest applicable updates for Microsoft Outlook (US English only

There are a number of possible reasons for Outlook to behave this way. We've presented the potential solutions in order from quickest to most time consuming. Use the following steps to re-enable the Send immediately when connected option. This problem can occur if the Send immediately when the connected option is not enabled, as shown in the following figure from Outlook 2016. When a message gets stuck in your Outbox, the most likely cause is a large attachmen

If there's a feature you think is missing from the Mail and Calendar apps, or if a feature in isn't working properly, you can provide feedback directly to the Mail and Calendar team. If your password isn't the problem, you might have a certificate error. If so, you'll see a message that Solve365 Issues support says, "There is a problem with the server's security certificate. The security certificate is not from a trusted certifying authority." Before you begin, make sure that your device has the latest operating system and app updates. Try the general troubleshooting solutions in Troubleshooting Mail and Calendar apps for Windows 1

The Lost and Found folder contains any folders and items recovered by the repair tool that Outlook can't place in their original structure. 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

When you install Office, an Inbox Repair Tool (SCANSPST.EXE) is also installed on your PC. The Inbox Repair Tool can resolve issues by scanning your Outlook data files and repairing errors. Your user profile is a collection of settings that let you customize the computer appearance and performance. It contains settings for desktop backgrounds, screen savers, sound Solve365 Issues support settings, and other features. User profiles help make sure that your personal preferences are used when you log on to Window

If you can't find a dialog box open, move on to Solve365 Issues support the next step. Ask a question and find solutions from Support Agents, MVPs, Engineers, and Outlook users. Connect with experts, discuss the latest Outlook news and best practices, and read our blo

This could be a reason why PST is corrupt or Inbox Repair Tool is not responding. A vast community of Microsoft Office365 users that are working together to support the product and others. You may have to contact your antivirus software vendor to determine how to configure the software to exclude any integration with Outlook or to exclude scanning in Outlook. Outlook stores certain data, such as email signatures and the spelling checker dictionary, in the AppData folde

The upcoming section will discuss the reasons in detail. Additional thing… does this user have a TON of folders? Like is their Inbox Solve365 Issues support got about 100 folders that they’re filing every customer or vendor or contact into? First go into Outlook and disable Cached Exchange mod

If calling people on the phone is not your preferred option, you can contact Outlook’s customer service via a live chat. In this quick guide we’ll show you how to get in touch with Outlook’s customer Solve365 Issues support service. Find out their service hours, the best phone number to reach them, and more ways to contact them. To access the calendar shared with your Microsoft 365 for business account, you'll need to accept the invitation from Outlook on the web, iOS, or Android. If you've already clicked the Accept button in Outlook 2016, you won't be able to re-accept the invitation from another Outlook application. The person who sent you the invitation will need to remove your permissions and then send a new invitatio

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