Microsoft security patches to mitigate against Meltdown and Spectre chip vulnerabilities are now slowing down PCs and servers. According to Reuters, Microsoft said on Tuesday that software patches released to guard against CPU security threats slowed down some PCs and servers, with computers running on older Intel processors seeing a noticeable decrease in performance. In a notice released on its website, Microsoft explained, “The compatibility issue arises when antivirus applications make unsupported calls into Windows kernel memory. These calls may cause stop errors (also known as blue screen errors) that make the device unable to boot.”
Microsoft customers with Intel-based processors are not the only ones reporting problems. Silicon Republic also reported that Microsoft has halted AMD Meltdown and Spectre patches after reports of unbootable PCs. Microsoft went on to blame AMD’s documentation for the problem. “Microsoft has reports of some customers with AMD devices getting into an unbootable state after installing this KB. To prevent this issue, Microsoft will temporarily pause Windows OS updates to devices with impacted AMD processors at this time,” Microsoft said on its website. Microsoft also issued updates for AMD devices, but has had to put the delivery of the patch on pause following a slew of complaints from customers on its support channels.
Microsoft customers also logged in several complaints on Microsoft forum page. One customer asked:
After installation of KB4056892 boot failure, after roll-back error 0x800f0845