What should I do if the Secure Exchanges tab no longer appears in the Outlook ribbon?

If the Secure Exchanges tab is no longer visible in the Outlook ribbon when it was previously present, this generally means that Microsoft has automatically disabled the add-in. The procedure below will allow you to reactivate it.

Step 1: Check whether the add-in has been disabled by Outlook

Open Outlook.
Click on File.
Click on Manage slow and disabled COM add-ins.
In this window, look for the OSecureExchanges add-in.

If OSecureExchanges appears in the list:

Click on Options.
Select the option Do not monitor this add-in for the next 30 days.
Click on Apply.

Warning: this action prevents Outlook from automatically disabling Secure Exchanges in the short term, but not in the long term, so continue with the following steps.

Step 2: Check for the presence of the WatchDog file

Note: the WatchDog is a module created by Secure Exchanges that prevents Microsoft from automatically disabling the Secure Exchanges add-in.

Press Windows + R.
Copy and paste the path %userprofile%\AppData\Roaming\SecureExchanges into the window that appears, then click OK.
Check whether a folder named SEWD is present.