In the event that accessing the following manialink tmtp:///:freezone:servers returns an HTTP error 12057, the following procedure will resolve the issue.
Click on the "Start" button (or execute the key combination "win + r") and type :
inetcpl.cpl
The following window will open:
In the "Advanced" tab, look for the "Security" section. Uncheck the "Check for server certificate revocation" box.
You can now access the manialink tmtp:///:freezone:servers. A computer restart may be required.
Warning, disabling this setting expose your computer to a significant security risk. It is strongly recommended to re-enable this parameter once the desired modifications have been made on the manialink.