My outlook mail is not opening

Question

Yes my Outlook mail is not opening up what's going on

Answer 1

Hi JAMESM COYNE

Thank you for your post.

I can see the Q&A Assist already shared some troubleshooting steps for Outlook startup issues. To let me guide you correctly, could you please clarify what happens when you try to open Outlook:

• Does the Outlook app not open at all?
• Does Outlook open but the mailbox or folders do not load?
• Do you see any specific error message?

In the meantime, please try these additional steps:

1, Make sure Outlook isn’t stuck running in the background

• Press Ctrl + Shift + Esc to open Task Manager
• Look for "Outlook" in the list, right-click it, and select End Task
• Then try reopening Outlook

2, Start Outlook in safe mode

• Close Outlook completely
• Press Windows + R > type: outlook.exe /safe > press Enter
• If it's stable in Safe Mode, an add-in is the likely trigger. In that case, disable add-ins in normal mode and re-enable them one by one.
  • Go to File > Options > Add‑ins > Manage: COM Add‑ins > Go…
  • Uncheck all unnecessary add‑ins, restart Outlook and re-enable one by one to find the culprit.

3, Check Outlook on the web: Sign in to Outlook on the web using a browser and see if you can open normally there.

Please feel free to let me know how it goes. Thank you for your time and understanding.

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Answer 2

Try these steps in order on the same Windows PC where classic Outlook is installed:

1. Run the Outlook startup troubleshooter
   • Use the classic Outlook startup troubleshooter to automatically diagnose and fix common “Cannot start Microsoft Outlook. Cannot open the Outlook window” issues.
   • Select the Start button in this article: I can’t start Microsoft Outlook or receive the error “Cannot start Microsoft Outlook. Cannot open the Outlook Window”.
   • When prompted that “This site is trying to open Get Help”, choose Open, then follow the steps in Get Help.
   • Requirements: Windows 10 or higher, and run it on the same PC where Outlook is installed.
2. Repair the Outlook profile (if Outlook can open at least once)
   • In Outlook, go to File > Account Settings > Account Settings.
   • On the Email tab, select the account and choose Repair.
   • Follow the wizard, then restart Outlook.
   • If Outlook 2016 is connected to Exchange, the Repair option may not appear.
3. Use the Outlook connectivity troubleshooter (if Outlook opens but won’t connect)
   • Run the classic Outlook for Windows connectivity troubleshooter from this article: Fix your Outlook email connection by repairing your profile.
   • Select Start, allow it to open Get Help, and follow the prompts.

If Outlook still will not open after the startup troubleshooter finishes, use the guided support option in the same article to continue troubleshooting, or consider reinstalling Office as shown in the Q&A example where uninstalling and reinstalling Office 365 resolved Outlook not opening.

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References:

• I can’t start Microsoft Outlook or receive the error “Cannot start Microsoft Outlook. Cannot open the Outlook Window”
• Fix your Outlook email connection by repairing your profile
• Outlook not responding error or Outlook freezes when you open a file or send mail
• What to do when Outlook will not open on my PC? - Microsoft Q&A