Canon WFT-E9 Advanced User's Manual page 62

6.
Select [OK].
The root certificate is imported.
Select [OK] on the confirmation dialog to return to the [Set root certif]
screen.
Note
Select [Delete root certificate] on the screen in step 5 to delete the root certificate
imported to the camera. Select [View root certificate details] to check the issuer,
subject, validity period, and other information.
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