If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files. Though the steps below might look complicated at first glance, just follow them in order, step-by-step, and we’ll try to get you back on track.

If you cannot open your Outlook data file or suspect that the file is damaged, use the Inbox Repair tool (scanpst.exe) to repair errors in the file.

You can confirm if this is the issue when Outlook stops by looking at the Windows Event Viewer Application Log for Event 1000 or Event 1001, and the following event details: Faulting application name: OUTLOOK.EXE, version: 16.0.15427.20194, time stamp: 0x62e9be45.

The problem occurs whether you drag the .MSG file to the email or select Insert > Attach File. If you review the Event Viewer for Event 1000 or 1001, it has the following event details: Faulting application name: OUTLOOK.EXE, version: 16.0.17328.20068, time stamp: 0x65c8cfd8.

There is a new symptom of Outlook crashing on launch starting on 7/15/2020. A fix has been published but will take time to propagate to worldwide availability.

When you send a meeting invite that includes a Loop component, Outlook crashes when you click Send. This issue happens after updating to Version 2307 Build 16626.20170. In the Application Event Log the crash event will match the specifics below: Faulting application name: OUTLOOK.EXE, version: 16.0.16626.20170, time stamp: 0x64cc6089.

The Microsoft Defender Offline scan will automatically detect and remove or quarantine malware. Learn how to remove malware from your PC. Use Microsoft Defender Antivirus in Windows 10 or Windows 11 to scan your PC for malware, viruses, or other threats.

Remote Assistance Support from Microsoft allows a Microsoft support professional in another location to view your computer screen and work on your computer over a secured connection. Protect yourself from tech support scams. Before clicking 'I accept', review the: Agreement for Microsoft Services. Microsoft Software License Terms.

The Microsoft Support and Recovery Assistant works by running tests to figure out what's wrong and offers the best solution for the identified problem. It can currently fix Office, Microsoft 365, or Outlook problems.

Outlook known issues in the January 2020 updates. [FIXED] Unable to send emails from QuickBooks, Office applications, or all Windows applications that allow to send files as attach. [WORKAROUND] Unable to save changes to a draft email in Draft folder for IMAP accounts.