Trusting the Physical Sciences Root CA in Mozilla Apps (Firefox/Thunderbird) [back]

---

Note: You will need to follow this same procedure in Firefox and Thunderbird for it to apply both to websites and standalone email.

Step 1.

Click here to download the Physical Sciences Root CA Certificate to your computer.

---

Step 2.

Choose "Save to Disk" and then click OK. It will save the file on your Desktop unless you've configured Firefox to do otherwise.

---

Step 3.

From the Tools menu in Firefox or Thunderbird select Options.

---

Step 4.

Click the Advanced tab at the top of the window, then the Encryption tab below, and then click the "View Certificates" button.

---

Step 5.

Click the Authorities tab at the top of the window and then click the Import button.

---

Step 6.

Select the psrootca.cer file and click Open.

---

Step 7.

Check the box next to "Trust this CA to identify web sites." and then click OK.

---

Step 8.

Click OK to close the two options windows that are left on the screen.