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Written By Rohit Singh
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Updated on March 30th, 2026
Microsoft Outlook downtime is business downtime. When the Outlook application crashes, it creates a domino effect across teams, SLAs, and client commitments. This technical article presents a comprehensive diagnostic framework that addresses every possible failure. We will also explain the different crashes and their causes to better understand the problem. Furthermore, in the following section, we’ll look at the possible solutions to rectify the error “Outlook Keeps Crashing”. Let’s begin with the article now.
Microsoft Outlook keeps crashing due to corrupted OST/PST files, faulty add-ins, outdated software, and more. To fix it, open Outlook in safe mode, update the software, create a new profile, or use a professional repair tool.
Users should first identify the true root cause of why Outlook keeps crashing. Based on that, they should choose which solution will rectify it.
| Crash | Symptom | Possible Cause |
| Crash right at the Start | Immediate Shutdown | Profile or File Corruption |
| When loading the Mail | Freezes during mailbox sync | Data File Corruption (OST/PST) |
| While doing Specific Tasks | Action-Based or Functional Trigger | Specific Add-in Conflicts |
| Post-Update Crash | Worked yesterday; fails today | Version Incompatibility |
| Randomly | No clear pattern or trigger | Resource Exhaustion or Security Software |
| On just one PC | Everyone else is working fine | A local Windows error |
In the following section, we’ll look at different manual solutions that can resolve the Outlook getting shut down issue. Moreover, we’ll also look at a professional tool that provides reliable and error-free results.
Opening the Outlook application in safe mode disables the add-ins, custom toolbars, and certain settings.
Look at the steps to begin the process:
Limitations: If the MS Outlook application still crashes, the likely cause will be a corrupted OST/PST file. Also, the safe mode identifies only the cause; it does not fix the problem.
If the MS Outlook profile gets corrupted, Outlook crashes when opening, or it may crash or freeze. The user can create a new profile without reinstalling the Outlook application.
The following are the steps to initiate the process:
The damaged Office files may cause Outlook to crash. Users can use the built-in Office repair features: Quick repair and Online repair.
Use the following instructions to start the process:
Outlook keeps shutting down if the user is using outdated or old versions of MS Office and Windows. Microsoft regularly releases updates to fix these issues. Make sure to update both Windows and MS Office to their latest versions.
Let’s look at the following steps to start updating them:
The Cigati Outlook PST Repair Tool is a trusted solution to fix or repair the corrupted Outlook PST data file. When this data file gets corrupted, it can cause Microsoft Outlook to crash or freeze when opening. This tool recovers or retrieves all the Outlook PST file data without losing any critical information. The user can recover PST files of any size and save them in different formats as well. Also, it offers different repair modes: Standard, Advanced, and Deep.
Quick and simple steps to resolve why Outlook keeps crashing:
In an enterprise, it becomes crucial to fix the error, “Outlook keeps crashing,” for workflow continuity. We have mentioned all the solutions that can help fix this error. The manual solutions listed in this article can fix minor issues. The major cause is the data file corruption that can be fixed using a professional tool, the Cigati Outlook PST Repair Tool.
You May Also Read: Outlook Emails Stuck in Outbox
Ans: Most email data is stored in a PST/OST file or on the email server, so if Outlook crashes, it will typically not cause permanent data loss. However, any unsaved drafts or recent changes you’ve made to the emails that were created before the crash occurred, and corrupt PST/OST files, can result in lost data if Outlook crashes repeatedly.
Ans: First, close MS Outlook and then locate the SCANPST.exe tool. Open it and select the corrupted PST file you want to repair. Click on Start to scan it. Now, restart Outlook and check if the PST file opens up or not.
About The Author:
Rohit Singh is a technology professional with 7+ years of experience specializing in email systems, Exchange Server, Office 365, MS Outlook, and data migration solutions. He creates clear, practical, and solution-oriented content to help users and IT professionals resolve complex technical challenges efficiently.
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