How To Fix the “Cannot Start Microsoft Office Outlook” Error?


Are you also facing problems while opening up Microsoft Office Outlook?

Users encounter a series of errors while trying to launch Microsoft Outlook.

As we all know, the popular email tool Microsoft Office Outlook makes it easy to keep track of emails, schedules, contacts, and projects. People may sometimes see the message “Cannot Start Microsoft Office Outlook.”

If you do this wrong, you won’t be able to get to your emails or other important information.

In this article, we’ll look at some good ways to fix “Cannot Start Microsoft Outlook” Cannot Open the Outlook Window”.

How To Fix the “Cannot Start Microsoft Office Outlook” Error?

Although the exact reason for this error is uncertain. The “Cannot Start Microsoft Office Outlook” mistake can be caused by many things, such as broken data files, compatibility problems, or problems with add-ins. You can fix the problem and get your Outlook app to work again by doing what this guide tells you to do.

Restart Your Computer

If the problem is caused by a short glitch or conflict, you might only need to restart the machine to fix it. After you restart your computer, try again to open Outlook. If you keep having the same trouble, move on to the next option.

Check Outlook Compatibility

Make sure the version of Microsoft Office Outlook you are using is compatible with the computer you are using. When the computer starts up, errors can happen if the tools don’t work well together.

You can go to the Microsoft Office website or read the product instructions to find out what you need to do to make sure the programs work together. If you need to, make sure you have the most up-to-date version of Outlook.

Repair Outlook Data Files

If the data files in Outlook are broken, the program might not start up right. With the built-in repair tool, Scanpst.exe, you can fix any problems with the data files. This is what you should do:

  • Close Outlook if it’s open.
  • Open File Explorer and look for the location of your Outlook data file(s).
  • Find a file with the name “Scanpst.exe” or “Inbox Repair Tool.”

How To Fix the “Cannot Start Microsoft Office Outlook” Error

  • Double-clicking on the file will start the fix tool.
  • Look at the list of files and pick the one that needs fixing.
  • Click the “Start” or “Repair” button to start fixing.
  • Once the problem is fixed, start Outlook again to see if the mistake is still there.

Start Outlook in Safe Mode

Starting Outlook in Safe Mode can help you figure out if the problem is caused by a bad add-in or by choices that don’t work well together. To start Outlook in Safe Mode, do the following:

  • To open the Run box, press the Windows key and the letter R.
  • Type “outlook.exe /safe” (without the quotes) and press the Enter key.

How To Fix the “Cannot Start Microsoft Office Outlook” Error

  • Outlook will start up in Safe Mode, which means that any changes or add-ons you made won’t be used.
  • If Outlook starts up in Safe Mode without any problems, the problem was caused by an add-in or change you made.

Disable Add-ins

Add-ins are extra programs or tools that you can add to Outlook to make it do more. But mistakes can happen when add-ins don’t work right or don’t work well together. To turn off add-ins, do the following:

  • Open Outlook in normal mode.
  • Click the “File” tab on the Outlook menu.
  • Select “Options” from the drop-down menu.
  • Click “Add-ins” in the Outlook Options window’s left pane.
  • Find the “Manage” drop-down box at the bottom and select “COM Add-ins” or “Disabled Items.”

How To Fix the “Cannot Start Microsoft Office Outlook” Error

  • Just press the “Go” button to get started.
  • If you don’t want to use any of the add-ins, just uncheck the boxes next to them.
  • Click “OK” to save your changes and get Outlook back up and running.

Create a New Outlook Profile

If you get the “Cannot Start Microsoft Office Outlook” error, it could be because your Outlook profile is broken. You can fix this by making up a new name for yourself. Do the following to set up a new Outlook account:

  • Close Outlook if it’s open.
  • To open the Run box, press the Windows key and the letter R.
  • Type “Control Panel” and press Enter to open the Control Panel.
  • In the Control Panel, click on “Mail” or “Mail (32-bit).”
  • Click on the “Show Profiles” button.
  • Click the “Add” button to make a new page.

How To Fix the “Cannot Start Microsoft Office Outlook” Error

  • Give the new person a name, and then click “OK.”
  • Follow the steps on the screen to set up the email account.
  • After making the new profile, you should restart Outlook to see if the mistake is still there.

Reinstall Microsoft Office

If none of these work, you may need to restart Microsoft Office. Before you restart Outlook, make sure to back up its data files so you don’t lose any information. You can get rid of Microsoft Office by using the Control Panel or a tool made for that reason. Then, you can reinstall it using the original download files or the Microsoft website.


This guide will help you figure out what’s wrong and fix the “Cannot Start Microsoft Office Outlook” problem. Try each option one at a time, and make sure to test Outlook after each step. You should be able to fix the problem and get back into your Outlook app after doing these things. To read more content like this, visit


What if the Scanpst.exe file is not on my computer?

If you don’t already have the Scanpst.exe file, you can get it from the Microsoft website or get help from Microsoft support.

If I restore Microsoft Office, will I lose the information I have in Outlook?

You shouldn’t lose the information in Outlook when you restart Microsoft Office. But before making big changes, you should always make a copy of your Outlook data files.

How do I back up my Outlook files?

You can back up your Outlook data files by moving the PST file(s) to a safe place, using the Export feature built into Outlook, or using a third-party backup tool.

Can I use something else instead of Outlook?

Yes, you can write and receive emails with programs other than Outlook. Some of these are Mozilla Thunderbird, Apple Mail, and web-based apps like Gmail and

Why does Outlook start in Safe Mode?

Outlook may start in Safe Mode if it finds that an add-in or change is causing a problem that keeps it from starting properly. You can figure out what’s wrong by turning off add-ons and starting in Safe Mode.

In this long article, we’ve talked about some ways to fix the “Cannot Start Microsoft Office Outlook” problem. If you follow the steps, you should be able to find the problem and fix it. Make sure that each fix is done right and that Outlook is checked after each one. If the problem keeps happening, you should contact Microsoft support or an IT professional for more help.

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