I've purchased code signing certificates for all my product Windows apps.

Updated at: 2025-08-29

Before, code signing certificates were not only expensive (hundreds of dollars or over a thousand) but also cumbersome to use. So, for the Windows clients for Brook，Shiliew，Zhi and Meeting, I opted for convenient self-signed certificates. However, self-signed certificates require users to manually trust the certificate before installation can proceed, as described in this article.

Now, I've purchased an enterprise code signing certificate for my company, which means you no longer need to manually trust the certificate when installing any of our Windows clients.

If you've installed any of the self-signed clients listed above

Because Windows may treat clients with different signatures as separate applications, if you've installed any of the self-signed clients listed above, then:

1. You may need to uninstall the old client first.
2. Then install the new client. If the new client doesn't open after installation, you may need to restart your computer.

If you're a developer with signing needs

If you have developed your own software and are having trouble signing it, you can ask for help in the Zhi VIP Chat group. I might be able to help. You can access the Zhi VIP Chat group from any of the above clients.