- Open Outlook
- When Outlook is open. Click on File.

- Click on Options

- Click on Trust Center.

- Click on Trust Center Settings.

- Click on Email Security followed by Settings.

- Click on Choose.

- See explanation below to determine which certificate you need to select.
First Time Setup: You will see the certificate with a date range that points to sometime in the future. Please simply click "Ok" on this image. No further steps are needed here.
The dates shown below will not match what you see.
Users that previously setup email encryption will most likely see a certificate that is either:
- About to expire
- Has expired
- Replacing a lost certificate with a new one
First look at the date at the top. If it matches one of the scenario's above.
Locate the certificate with the newest date and then:
- Click on Correct Certificate.
- Click OK.

At this stage. Please simply click OK until you've returned to outlook closing all sub menus. This process is now complete. You are ready for Step 4.