Microsoft recently issued an emergency out-of-band Windows update that disables Intel’s patch for the Spectre variant 2 attack.
According to Microsoft, Intel’s mitigation caused a number of unexpected reboots and stability problems, as well as possible data corruption and loss.
Around last week, Intel itself had warned customers not to deploy their fix due to the aforementioned issues. Hardware makers Dell and HP also pulled the BIOS updates which used Intel’s code that they had released.
The Windows update is available for Windows 7 SP1, 8.1, and 10 for both client and server.