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Developers of the Comodo Antivirus utility are advising users to ensure they update before attempting to upgrade to the Windows 10 Creators Update, version 1703. Comodo say's users running the latest version of Windows 10 can experience severe graphical issues if used with product versions older than those listed above. More details below: Some users have reported issues with font rendering problems in applications and even the command prompt. Users who didn't apply the update but already installed the Creators Update, should remove the software or install the latest version. One of the important steps we recommend in our 12 step prep guide for the Windows 10 Creators Update is removing the Antivirus utility completely before upgrading.
Meltdown/Spectre: It's a vulnerability that has existed in all processors for the past 20 years. The fix isn't going to slow down your modern processors. Consumers should be aware of it, but it isn't some crazy imminent threat. There are no known exploits out in the wild at this time. Windows 10 is already patched, as are most other devices. As always, just make sure you have your devices up-to-date. The patches aren't going to slow down your phone or modern PC. However, there have been issues with a previously released patch for older systems with AMD processors -- but Microsoft has already pulled the patch. Here is an easy to follow explanation I got from a Cisco engineer: "Modern processors get some of their performance by trying to guess what you’re going to ask it to do next. It predicts that you’re going to want the CPU to do a task, and gets started on it. So, by the time you ask it to do the work, it’s either already done or close to done. The flaw is that researchers figured out how anyone can ask the processor what it has guessed you will want to do. This means that an attacker can read things in the computer’s memory that they’re not supposed to have access to. This affects places like Amazon’s EC2 or Microsoft’s Azure where they run virtual servers for many different customers on the same physical hardware." I would have written an article on this, however, when you get into it, it's quite overwhelming, and it's already been explained so well by another trusted and experienced tech writer, Woody, who is all over the story. So, for more details and clarity, I highly recommend reading the following pieces from Computer World's Woody Leonhard: https://www.computerworld.com/article/3245788/microsoft-windows/windows-meltdown-and-spectre-keep-calm-and-carry-on.html https://www.computerworld.com/article/3246633/microsoft-windows/a-mess-of-microsoft-patches-warnings-about-slowdowns-and-antivirus-proves-crucial.html
In case you missed it, there is a new Cumulative Update for Windows 10 version 1511. This is the version most users are running and not for the Windows Insiders (who btw, also got an update - you can read more about that here ). This new cumulative update for May includes security and bug fixes that will help keep your system secure and running smooth. Read more: http://www.groovypost.com/news/windows-10-for-pcs-update-kb3156421-build-10586-318-available-now/