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Windows: Guest Additions installation might fail due to missing certificate

PostPosted: 6. Dec 2021, 06:19
by sorbet
Same problem here even with VirtualBox 6.1.30. Windows 7 guest on a Fedora 35 host.

Re: Windows: Guest Additions installation might fail due to missing certificate

PostPosted: 6. Dec 2021, 18:23
by scottgus1
Windows 7 needs to be updated to allow SHA256 security certificates, then the Guest Additions should install. Web-search how to add SHA256 certificate handling to Windows 7.