Microsoft has released patches to counter Spectrum and Meltdown attacks, but these require the antivirus installed on the PC to be compatible.
Microsoft has released patches in its monthly updates to limit Spectrum and Meltdown attacks. These patches are normally installed automatically on Windows 7, 8, and 10 computers, but can cause problems with antivirus programs, leading to a risk of system crash with the display of a “blue screen of death” (BSOD). ), a sign of an error at the heart of the system. In order to avoid these inconveniences, the publisher only installs the patch on machines whose antivirus is compatible. For this, the antivirus must add a specific key in the registry of Windows that will be verified by the system of Windows updates. Here’s how to check for the presence of this key:
1 – Launch the Registry Editor
Use the <Windows> + <R> keystroke and type regedit in the dialog box. If a window appears asking to confirm the launch of this program, click the OK button.
2 – Browse the database
The Windows registry is made up of keys that are organized as a tree.
Click the small triangle to the left of the HKEY_LOCAL_MACHINE entry to expand its tree. Repeat with SOFTWARE.
Continue browsing by clicking the small triangle to the left of the Microsoft entry, then Windows, then CurrentVersion.
Scroll through the alphabetical list to find the QualityCompat entry and click on the small triangle on the left. You should then see the key cadca5fe-87d3-4b96-b7fb-a231484277cc.
If the key is present, then there will be no problem installing the fix. If it is absent, it means that the antivirus is not yet compatible and it is then necessary to contact the technical support of its publisher to determine what is the procedure to follow to obtain compatibility.