Outlook stops responding when trying to open Visual Basic from the Developer's tab

Hi Techsmill,

I recommend you could follow the below steps to troubleshoot it.

1. To check if it is related add-in, it is recommended to run Outlook on safe mode. Exit Outlook client, then right-click Start button and select Run, type “outlook /safe” in the Run box and press Enter key.

2. To check if it is related to corrupted data files(.pst and .ost), it is recommended to repair Outlook data files.
Repair Outlook Data Files (.pst and .ost) - Microsoft Support

3. To check if your profile is corrupted, you could create a new profile and view if outcome is better.
Create an Outlook profile - Microsoft Support

Before the operation, please don’t remove previous profile, and you’d better to back up data in case of accident data loss.
Export or backup email, contacts, and calendar to an Outlook .pst file - Microsoft Support

If my answer helped you, you can click on Mark as best response.

Kindest Regards

Leon Pavesic