Spectre V2: spectre mitigation: LFENCE not serializing, switching to generic retpoline

[Madonna]

Hello!

I do not know if there is an entry in this forum already an entry on this topic, I found in any case nothing. My virtualbox has not worked for about 1.5 weeks. On Saturday, the 10th of March, I still programmed normally. On Sunday, March 11, there was a major update from Windows (10). I think it has something to do with it. Anyway, I wanted to program the next Thursday again something and got this "error message" in the headline. The VM can not boot anymore. I have already uninstalled the VM and reinstalled, wanted to uninstall the update, but this is not possible. Does anyone know how to fix this problem?

Thank you for your answers!

[socratis]

there was a major update from Windows (10)

Is that the host or the guest? And if that's the host, what's the guest? Please read the following: Minimum information needed for assistance.

got this "error message" in the headline

Headline? What do you mean by headline? Not a VirtualBox term AFAIK...

[BillG]

Major upgrade on Sunday March 11? There was the normal monthly cumulative update on Tuesday March 12. It caused no problems here.

The last major upgrade for Windows 10 was to version 1809 last year. The version 1903 upgrade is still in beta testing.

To show or hide updates use the wushowhide app.

[Madonna]

Thank you for your reply and help.
I solved the problem by installing Windows 7. Now everything works again as it should.