Microsoft Outlook not responding

New Contributor

Microsoft Outlook is not responding on both my laptop and my desktop PC.

When I open Outlook, it downloads my latest emails from Hotmail.  

But when I click on an email, it says Outlook(Not Responding).


Both computers are running Windows 10.  The laptop is running Outlook 2013 and the desktop is running Outlook 2016.  


I haven't made any changes to my computers, but this just started happening a couple of days ago on both computers.  In both cases, outlook is using CPU (around 20 - 30%)


I have tried running in Safe mode and disabling add-ons, but that didn't help.   


Any help or advice would be greatly appreciated.





4 Replies
best response confirmed by Ryanoterp (New Contributor)

Hello! @Ryanoterp 

Does this happen with one specific email or is it any email you try to open? 


Have you tried any of the following? 

  • Reparing Outlook / office 
  • Removing and adding your email account in Outlook again 
  • Typed "run" in the start menu and then "Outlook.exe /resetnavpane" To see if that works?

Let me know how it goes or if you need further assistance! :) 


Kind Regards
Oliwer Sjöberg



Thanks Oliwer. 

Removing my Hotmail account and adding it back seems to have fixed the issue.



No problem at all@Ryanoterp ! 

Wonderful to hear that I could help! 
Feel free to mark my reply as a solution so other knows :) 


Have a great day/evening/night wherever you are! 

Kind Regards

Hi, @Ryanoterp 

There are different factors that may be responsible for Microsoft Outlook not responding errors. These reasons include loading some external content such as images & text, corruption in the Office program, increase in Outlook mailbox size, Outlook & another program conflict, etc. 
Hence we need to resolve such issues first, to fix Outlook not working error. You can easily resolve them by performing these activities:

  • Open Outlook in safe mode.
  • Disable add-ins.
  • Disabling Anti-virus program.
  • Repair Outlook PST file.
  • Repairing MS Office Suite

Try these operations to fix your Outlook not responding error. I hope it may resolve your issue.