Skip to content

  • Projects
  • Groups
  • Snippets
  • Help
    • Loading...
    • Help
    • Support
    • Submit feedback
  • Sign in / Register
O
official-fix-outlook-guide6591
  • Project overview
    • Project overview
    • Details
    • Activity
  • Issues 9
    • Issues 9
    • List
    • Boards
    • Labels
    • Service Desk
    • Milestones
  • Merge Requests 0
    • Merge Requests 0
  • CI / CD
    • CI / CD
    • Pipelines
    • Jobs
    • Schedules
  • Security & Compliance
    • Security & Compliance
    • Dependency List
    • License Compliance
  • Packages
    • Packages
    • List
    • Container Registry
  • Analytics
    • Analytics
    • CI / CD
    • Code Review
    • Insights
    • Issues
    • Value Stream
  • Wiki
    • Wiki
  • Snippets
    • Snippets
  • Members
    • Members
  • Collapse sidebar
  • Activity
  • Create a new issue
  • Jobs
  • Issue Boards
  • Lavonne Barclay
  • official-fix-outlook-guide6591
  • Issues
  • #4

Closed
Open
Opened Dec 03, 2025 by Lavonne Barclay@lavonnebarclay
  • Report abuse
  • New issue
Report abuse New issue

Why is my Outlook all of a sudden not opening? Microsoft Q&A

If you can't choose any of the menu options, type inside an email message, calendar event, or contact, Outlook may have frozen. There are three steps you can take to try to get Outlook working again. However, if you encountered other issues like Outlook not responding, learn how to fix Outlook not responding here. Click the above link to have a quick download, then you can have Outlook errors fixed within minutes. Check the solutions to fix "Outlook not opening" problem and how to avoid "Outlook won't open" again. Here are some common fixes that should work when Outlook doesn't open, whether you're using Windows or a Mac.

Are you having trouble starting Outlook or receiving "Cannot start Microsoft Outlook. Cannot open the Outlook window" error messages? We can fix the problem for you, or you can use the troubleshooting steps we're providing below to help resolve these startup issues. Since your app doesn’t open, you’ll have to use another Office app on your PC to trigger the update. This is because when you update one Office app, it automatically updates all other Office apps on your PC. When your cache files are deleted, launch Outlook, and the app should open without problems.

When the Mapi32.dll file is damaged or corrupt, you may encounter the following send and receive error while sending or receiving messages in Microsoft Outlook. Poor network or internet connection can lead to Outlook send and receive errors as the client fails to communicate with the mail server. Thus, it’s important to ensure that your internet is working. If you find stuck messages, follow these steps to clear them and resolve the Outlook send and receive error. If you are not sure, disable the firewall temporarily to check if it’s the cause behind the Outlook send/receive error. After disabling, if you’re able to send/receive new messages, contact the admin or service provider for the information and make changes to the firewall settings.

Also, we go over the stepwise working procedure of both solutions and the reasons behind PST file corruption issues. The Inbox Repair tool or ScanPST.exe is not a convenient way because of multiple restrictions. Moreover, this tool can quickly recover email messages, calendars, tasks and other data from corrupted PST files.

Before making changes, make sure to save your Outlook stuff to keep it safe. If Outlook still doesn’t open after trying these fixes, you might need more help. Asking IT experts or Microsoft’s support team could give you the best solution for the Outlook problem you’re facing. If you can't open Outlook, or Outlook disappears or crashes, one of your add-ins may be to blame or you may need to update Outlook. Find solutions to common problems or get help from a support agent. With the window with the Windows Update, you will see all the updates you need to make for your Microsoft Office.

In this case, you can reset your view settings before opening the step-by-step Outlook troubleshooting app. Select your Microsoft Office installation on the list and choose "Change" at the top. In this case, open Outlook in safe mode where your add-ins aren’t loaded and remove any suspicious add-ins. In most cases, Outlook doesn’t tell you why it isn’t opening, which leaves you guessing as to what has caused the issue. Due to underlying system or PST issues, Outlook may crash, freeze, or not function properly. Find solutions to common problems or get help from a support agent.

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 minutes) to see if Outlook starts working again. You might need to set Windows Update to automatically download and install recommended updates.

Make sure you close Outlook before you start Recovery Toolbox for Outlook. Try to download the newer version of our software and install it. Our software can recover data only from an existing file. You can try to restore your file with some unerasing software and then recover it with Recovery Toolbox for Outlook.

Installing any important, recommended, and optional updates can often correct problems by replacing out-of-date files and fixing vulnerabilities. To install the latest Windows and Office updates, click step-by-step Outlook troubleshooting the link below. Use the classic Outlook startup troubleshooter to diagnose and fix several common classic Outlook for Windows issues for you. 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 the in-box Program cannot fix the corrupted Outlook PST files, you can also try Wondershare Repairit for Email.

With the window with the Windows Update, you will see all the updates you need to make for your Microsoft step-by-step Outlook troubleshooting Office. If you are figuring out how to fix "Outlook Not Opening," you will find several possible solutions. The best part is that you are spoiled for choice because some are quick to implement while others are time-consuming.

Linked issues

  • Discussion
  • Designs
Assignee
Assign to
None
Milestone
None
Assign milestone
Time tracking
None
Due date
None
0
Labels
None
Assign labels
  • View project labels
Reference: lavonnebarclay/official-fix-outlook-guide6591#4