Using Classic Outlook on Windows for personal email, calendar, and contact management
Hello Bradley,
Good day! Thank you for posting to Microsoft Community. We are happy to help you.
I understanding your Outlook is slowing down when you want to create a new message it takes about 15-30 seconds.
May I know if you are still using these templates? To remove this dialog box you have to remove the templates from your Outlook, to remove the templates In your Outlook ribbon, select "Open Templates." On the page that opens, find and click the Template you'd like to delete lick "More," and then "Delete Template." Note: any changes made will require that you close and re-open Outlook
To narrow down on your Outlook slowing down when opening, please check for updates and update to the latest version if you are not using it already: open Outlook > click on File > Office account > Office updates > update to the latest version.
Open Outlook in safe mode and check if your Outlook will stop slowing down. Open Outlook in safe mode (microsoft.com)
We are looking forward to your reply. Thank you for your cooperation.
Sincerely,
Simbarashe | Microsoft Community Moderator
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