That's after complaints from customers that the software updates freeze their machines.
Microsoft also says it's working with AMD to resolve the issues.
AMD was not immediately available for comment but its shares plunged on the news.
Last week, the stock rose nearly 20 percent. Investors speculated the company could wrestle market share from its bigger rival, Intel.
Intel seemed to be more affected by Meltdown and Spectre.
Ryan Kalember is senior vice president of cybersecurity at Proofpoint.
(SOUNDBITE) RYAN KALEMBER, SVP OF CYBERSECURITY, PROOFPOINT (ENGLISH) SAYING:
"When you really factor in what's Specter and Meltdown represent, they represent a flaw in the way that chips were designed. The processor architecture itself. So, there are lots of different ways that we can mitigate the risk that all of that has created, and it's probably going to lead to more hiccups along the way, as all the different software and hardware, and firmware pieces need to be made to work together to try and mitigate these really fundamental security flaws."
Last week, security researchers revealed two security flaws in computer chips, Meltdown and Spectre.
If unpatched, the flaws allow hackers steal confidential information from almost all existing computers, phones and cloud-based servers.