https://www.epo.org/en/node/online-filing-sp13-certificate-update-epo-server

Online Filing SP13 – certificate update (EPO server)

Online filing SP13 users who are experiencing certificate issues are advised to upgrade to SP14 for greater stability or to download and install the latest certificate update

Users who have the network version of Online Filing will need to get their administrator to install the update on their Online Filing server PC. 

We apologise for any inconvenience.