How to disable signatures in Outlook on the Web (OWA)

Resolution

You can remove the built-in signatures options from OWA by disabling the feature in the OWA mailbox policy in Exchange Online.

Please click on the required options listed below to go through the detailed description:

Disable signatures in Outlook on the Web

To disable signatures in Outlook on the Web:

1. Sign in to the Exchange Online admin portal as an Administrator. The Exchange admin center is displayed.
   
2. From the menu sidebar, select Roles, then select Outlook web app policies.
   
   
   _{Select Roles, then select Outlook web app policies.}
   
3. Select the OWA policy. The details of the selected policy are displayed.
   
   
   _{Select the OWA policy. You can see the selected policy details on the right.}
   
4. In the Features, select Manage Features.
   
   
5. Expand the User experience drop-down and unselect Email signature.
   
   
   _{Expand the User experience drop-down and unselect Email signature.}
   
6. Select Save changes.