SSO bug - ERR_SSL_PROTOCOL_ERROR

Hi,

We use Zerotier with SSO using OIDC(IDP Jumpcloud) for our organisation and everything was working well for nearly a year until recently when we noticed couple of devices(Windows 11) having the following issue:

localhost sent an invalid response - ERR_SSL_PROTOCOL_ERROR

We’ve tried updating/downgrading Zerotier on 2 employee laptops and it did not work. For one of the employees she said updating worked for her. The only solution seems to be to disable SSO.

Please advise what to do to fix this issue.

Thank you.