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Opened Sep 23, 2025 by Richelle Auld@richelleauld13
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Fix "Outlook Not Opening" Error in Windows 10: Top 7 Solutions

Start Outlook in safe mode to fix "Processing" screenIn Windows 10, choose Start, type Outlook.exe /safe, and press Enter.In Windows 7, choose Start, and in the Search programs and files box, type Outlook /safe, and then press Enter.In Windows 8, on the Apps menu, choose Run, type Outlook /safe, and then choose OK.

This option could be useful if you constantly have to wait for Outlook to rebuild its data file when you restart. To work around the issue, you will need Fix Outlook troubleshooting hub to end all Office processes that are running and disable the presence features. We have tried all things mentioned above (except reconnecting the MS account), but the only solution so far is deleting the users profile.

To do this, start up the Windows Task Manager either by pressing Ctrl + Alt + Del, or by right clicking the taskbar and choosing "Start Task Manager". Then switch to the Processes tab and find all OUTLOOK.EXE items in the list. Click on each OUTLOOK.EXE to select it Fix Outlook troubleshooting hub and hit the "End Process" button. To create a user profile, you must first create a user account. When the new account is created, a profile is also created.

Outlook stores all your email messages, meetings and events, contacts, and tasks in data files. You can run the Inbox Repair Tool (scanpst.exe) to scan your Outlook data files and repair errors. Outlook caches various files to speed up your app experience. When you have issues with the app, it’s likely the app’s cached files are corrupted.

It's free, more secure and will require a verification code in addition to your password. If you still can’t recover your account, you can create a new Google Account. When you do, you can follow these steps to avoid getting locked out of your Google Account. To protect your account, it may be temporarily locked after too many unsuccessful attempts to sign in.

If your account is affected, be sure to secure your account and update your recovery information. "I had a large PST file that was causing Outlook to crash. Cigati handled it like a breeze. The software is user-friendly and provides clear instructions. I'm so glad I found this tool." If your Microsoft account recovery request wasn't granted, you can keep trying as many times as you want, up to two times per day.

The root cause was the deployment of an incorrect campaign data file, which led to Fix Outlook troubleshooting hub false positive campaign detection. We have since reverted to the right data file and the outbound email flow has returned to a normal state. We also released a new rule that corrected the wrong campaign verdict for all impacted customers during the incident. If you're having problems sending or receiving email, read how to Fix Outlook.com email sync issues. 1- Going to add resource room calendar via "Add Calendar" → From Address Book → Global Address List. 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.

If you have a large number of items in any single folder, you may experience performance issues during certain operations. For more information, see Outlook performance issues when there are too many items or folders in a cached mode .ost or .pst file. 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. If your antivirus software includes integration with Outlook, you may experience performance issues.

A well-running Outlook will ensure that you enjoy the full benefits of this popular email program. If you follow the above solutions, your Outlook will perform according to your expectations. If you are trapped in a similar situation that my Outlook is not opening, you may feel disturbed about the problem. In the following post, you will find out solutions for the common Outlook not opening problems bonus tips to prevent the problem from happening again.

If it does, the problem is definitely in your antivirus software. In this case, you can either contact its vendor for assistance or simply choose another protection program. When you install Outlook, an Inbox repair tool (scanpst.exe) is also installed on your PC. The Inbox repair tool can resolve problems by scanning your Outlook data files, and repairing errors. To use the Inbox repair tool, exit Outlook, and then follow the steps in Repair Outlook Data Files (.pst and .ost). As your mailbox size increases, more resources are required to open each folder.

If creating a new profile solves your issue, you can return to the Show Profiles dialog and delete your old profile. If you have Outlook in your startup folder, remove the shortcut from the startup folder. Sometimes outdated or over-protective anti-virus / anti-spam programs can conflict with Outlook or with one of your Outlook add-ins. As a result, the Fix Outlook troubleshooting hub anti-virus blocks the add-in and prevents Outlook from functioning properly.

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Reference: richelleauld13/9018repair-outlook-data-file#3