"Something has gone seriously wrong," dual-boot systems warn after Microsoft update (Ars Technica)

Ars Technica covers
a recent update
that is causing problems for users with systems that dual-boot Windows
and Linux.

'Note that Windows says this update won't apply to systems that
dual-boot Windows and Linux,' one frustrated person wrote. 'This
obviously isn't true, and likely depends on your system configuration
and the distribution being run. It appears to have made some linux efi
shim bootloaders incompatible with microcrap efi bootloaders (that's
why shifting from MS efi to 'other OS' in efi setup works). It appears
that Mint has a shim version that MS SBAT doesn't recognize.'

The reports indicate that multiple distributions, including Debian,
Ubuntu, Linux Mint, Zorin OS, and Puppy Linux, are all
affected. Microsoft has yet to acknowledge the error publicly, explain
how it wasn't detected during testing, or provide technical guidance
to those affected. Company representatives didn't respond to an email
seeking answers.