As of version 5.8.2, TLS 1.2 is supported. If Starling 2FA is in use, 1.2 is the minimum requirement.
Password Manager is not affected by disabling SSL 3.0 and weak cyphers. Password Manager will use the system settings configured on the host where it is installed.
Password Manager runs on top of IIS and is not dependent on it. Therefore Password Manager will work with either HTTPS or HTTP (SSL or none).
Password Manager optionally allows the use of a custom certificate, which would be added via Certificate Manager on the host. To use any customer certificates, it is configured within the PMAdmin site. This certificate is used to encrypt traffic to and from the Password Manager services (inter-communication).
TLS and SSL ERRORS:
".NET Error code 0x800c0019L. The Secure Sockets Layer (SSL) certificate is invalid"