See below for revoking certificates in bulk. 

To revoke certificates in bulk

1. Log in as an administrator with the required permissions. 

   See Browsing roles for the permissions granted to each ad administrator role.

2. Go to Control > Certificates.
3. Click Bulk Actions.
4. In the Select bulk actions drop-down list, select Revoke.
5. Configure a filter for the certificates you want to edit. Use the filter options to combine several filters.
6. In the Revocation Reason drop-down list, select the reason for revoking certificates.
7. In the Comment text box, provide a comment for revoking certificates.
8. Click Save to add all the certificates matching the filter to the revocation background task. 

   An INFO log will indicate the number of revoked certificates upon task completion.