outlook not opening

Why Does Outlook Not Open? 


Outlook, a widely-used email client, offers an efficient way to manage contacts, calendars, and emails. However, when  Outlook not opening, it can disrupt your workflow and hinder productivity. Whether you encounter this problem on Windows 11 or Windows 10, this comprehensive guide has you covered.

The frustrating aspect of this issue is that Outlook won’t open, without displaying any error messages, leaving users bewildered. In this article, we’ll delve into the common causes behind this problem and provide clear step-by-step solutions.

Common Reasons for Outlook Not Opening in Windows

  • Corrupted Outlook data files
  • Conflicts between add-ins
  • Outdated software
  • Conflicts between system and software

Outlook Is Not Opening: Possible Solutions:

Check for System Updates

Outdated system could be the reason that you are unable to open Outlook on your device. 

  1. Click the Start button and access the Settings app.
  2. Tap on the  Windows Update option.
  3. Hit the  “Check for Updates” button. 
  4. Install any available updates.
  5. Open Microsoft Office to check if Outlook opens. 

Restart Your PC

Before you proceed with restart make sure to save the important work, and close the program running in the background.

  1. Hit the  Start button.
  2. Tap on the  Power button.
  3. Click to Restart.
  4. Attempt to open Outlook after the restart.

Use Specialized PST Recovery Software

Remo Repair Outlook PST is a reliable solution designed to fix Outlook startup issues and recover data files. Here are the instructions to follow:

  1. Download and install the software.
  2. Click “Select PST File Manually,” locate your PST file, and click Open.
  3. Choose the scan type (Normal Scan or Smart Scan).
  4. Set the destination folder and click Repair.
  5. Launch Outlook and check for issues.

Open Outlook in Safe Mode

You can open the Ms Outlook in Safe Mode following two methods: 

Use the  Keyboard Shortcut

  • Press and hold the Ctrl key.
  • Double-click the Outlook icon.
  • Release Ctrl when prompted to start Outlook in Safe Mode and click Yes.
  • Check if Outlook opens successfully in Safe Mode.

Use the Run Dialog Box

  • Right-click the Start button and select Run.
  • Use the command “Outlook.exe /safe” and click the Enter button.
  • If Outlook runs normally in Safe Mode, it may be due to corrupted add-ins.

Temporarily Disable Antivirus Software

  1. Open your antivirus software and navigate to protection settings.
  2. Disable real-time protection temporarily and specify a time frame for the change.
  3. Confirm the action and try opening Outlook.
  4. Re-enable your antivirus software afterward.

Disable Add-Ins Using Command Prompt

  • Press the Win key and search for cmd. Choose “Run as Administrator.”

Use the following commands to disable add-ins:


Copy code

cd “C:\Program Files\Microsoft Office\OfficeXX”

outlook.exe /disable addin:ADDIN_NAME

  • Replace XX with your Office version and ADDIN_NAME with the add-in’s name.
  • Test Outlook to see if the issue is resolved.

Create a New Outlook Profile

  1. Open Command Prompt as administrator and enter control mlcfg32.cpl to access the Mail Setup dialog.
  2. Click “Show Profiles” and then “Add” to create a new profile.
  3. Follow the on-screen instructions to set up the profile.
  4. Launch Outlook using the new profile: outlook.exe /profile “PROFILE_NAME”.

Repair Outlook Data Files

  1. Open Control Panel, go to Programs and Features, and select Microsoft Office.
  2. Right-click, choose Change, and then select Repair.
  3. Follow on-screen instructions to repair data files.
  4. Try opening Outlook again.

Reinstall Microsoft Office

  1. Uninstall Microsoft Office from the Control Panel.
  2. Restart your PC.
  3. Download and reinstall Microsoft Office from the official website.
  4. Open Outlook to check for issue resolution.

For users facing the issue of Outlook not opening offline, consider these additional steps:

  • Remove favorites in Mail Navigation
  • Recreate the OST file with Remo OST to PST Converter
  • Prevent OST file corruption by properly closing the app and avoiding sync with a slow internet connection.

While Outlook not opening can disrupt productivity, following these troubleshooting methods can help resolve most issues. In case, if you are still unable to fix the trouble, do not hesitate to contact the experts for professional assistance.