Since 8:00 PM MSK on July 14, 2026, users of the Electronic Justice system, including kad.arbitr.ru, have been experiencing access issues caused by a revoked security certificate. The service administrators have officially confirmed the incident.
What Happened?
An SSL/TLS certificate is a digital certificate that verifies a website's identity and encrypts the connection between your device and the server.
When a certificate is revoked, it is no longer considered valid. As a result, web browsers and antivirus software may treat the connection as potentially unsafe and block access to the website.
This does not necessarily mean that your computer is infected or that the website has been hacked. In this case, the issue originates on the server side, and the service has already acknowledged the technical problem.
What Errors May Appear?
Depending on your browser or security software, you may see messages such as:
- "Security certificate has been revoked."
- "Your connection is not secure."
- "Access has been blocked."
- SSL/TLS certificate validation errors.
- Security warnings from antivirus software such as ESET, Kaspersky, or others.
In many cases, users will be unable to continue until the website's administrators replace the certificate.
Why Does the Website Work on One Device but Not Another?
This behavior is completely normal.
Different browsers, operating systems, and antivirus products validate certificates differently. For example, a smartphone may allow access while a desktop antivirus blocks the connection because of the revoked certificate.
If the service has officially confirmed the certificate issue, the problem is not caused by your device.
What Should Users Do?
Until the administrators restore normal operation, it is recommended to:
- Wait for the service to install a new valid security certificate.
- Follow official announcements from the Electronic Justice system.
- Avoid reinstalling your browser or changing operating system settings unnecessarily.
- Understand that antivirus software is doing its job by warning about an invalid certificate.
Should You Disable Your Antivirus?
Some users notice that the website opens after disabling or uninstalling their antivirus software.
While this is technically possible because the antivirus stops checking the certificate, it is not recommended as a general solution. A revoked certificate is a legitimate security concern, and antivirus software is designed to protect users from potentially unsafe connections.
Only consider temporarily disabling HTTPS inspection if you fully understand the risks and are absolutely certain that you are connecting to the official website. Once the administrators replace the revoked certificate, the warnings should disappear automatically.
Will Users Need to Do Anything After the Problem Is Fixed?
No.
Once the website installs a new valid SSL/TLS certificate, browsers and antivirus programs will recognize it automatically. In most cases, users will not need to change any settings or perform additional actions.