Expired Root Certificate (CERT_HAS_EXPIRED)
Fix the CERT_HAS_EXPIRED error in Mnemonica Gate when you use proxy servers.
- Projects
- ProductionArchive
- Updated
This article explains how to fix the connection error CERT_HAS_EXPIRED in Mnemonica Gate when you use a proxy server.
What to do
If the Gate shows CERT_HAS_EXPIRED when it connects to Mnemonica through a proxy server, the root certificate on your device has expired. This certificate guarantees the identity of Mnemonica.
Install it
With administrator credentials, double-click the downloaded file. This installs the certificate in the keychain of your system.
To prevent this error, keep your devices updated. The operating system renews root certificates when it updates.
Why this error occurs
Every HTTPS web domain has a digital certificate (SSL). The certificate proves who owns the domain and encrypts the traffic. Third parties, called Certificate Authorities (for example Let's Encrypt), issue these certificates.
Your operating system (Windows, macOS, Linux, Android, iOS) keeps a root certificate for each Certificate Authority. With this certificate, your device trusts all the domains that the authority signed. This applies to websites and to applications such as the Gate.
All certificates expire. When the certificate of a site expires, the owner must renew it. When a root certificate expires, the operating system stops trusting it. The sites that the authority signed then become unreachable, or the system shows them as threats.
Root certificates last 5, 10 or 15 years. The operating system renews them in its periodic updates. If nobody updates the operating system, you must update the expired root certificates yourself.
FAQ
No. Mnemonica cannot work with expired certificates. The problem is in your operating system, which is probably not updated.
No. The problem is in the operating system of your device.
Yes, if you have the certificate and administrator permissions on the device.
Yes. But if you use our proxy servers, you cannot use the Gate.
Related articles
Use the Gate with a proxy server
Set the proxy mode of Mnemonica Gate, and see which proxy types and authentication methods it supports.
Install Mnemonica Gate
Download and install Mnemonica Gate on Mac or Windows, check for updates, and set its Preferences.
Pairing the Gate with browsers
Pair Mnemonica Gate with your browser using a 6-digit code, check the pairing status, and fix a Gate that cannot connect.
Manage your transfers in the Gate
Pause, resume, remove and retry transfers in the Mnemonica Gate window, and read the status messages.