Secure Boot is a security standard that ensures your computer (or virtual machine) only starts up using software that is trusted by the manufacturer. This trust is maintained through digital "certificates" embedded in the system's firmware.
Periodically, the global technology industry refreshes these certificates to maintain the highest levels of security against modern threats. This is a standard, industry-wide process that affects all modern computers—both physical hardware and virtual environments. Not updating these certificates over time could eventually prevent the system from recognizing and installing the latest security patches for the startup process.
As a provider of virtual hardware, Parallels is actively participating in this global transition. We are updating the virtual firmware within Parallels Desktop to include the newest industry-standard certificates.
Our primary goal is a seamless experience, to protect stability and avoid regressions, Parallels is conducting thorough compatibility and regression testing across supported versions of macOS and Windows guest configurations before releasing updates. This ensures that the transition impact is minimal or not present at all for existing or new virtual machines or installation workflows.
No action is required from you right now. The necessary updates will be delivered through the standard Parallels Desktop update mechanism. We will provide an update to this article when verification testing is complete and will publish additional information if any manual steps are needed for any specific cases.
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