Windows updates are messing with some PCs running certain AV software again

Remember a few weeks ago when a Windows 10 update caused some PCs that were running certain third-party antivirus software to freeze or hang? Well, it's happening again, but this time it's affecting Windows 7 PCs.

Microsoft rolls out security updates on the second Tuesday of every month, known as Patch Tuesday. For this month, those began installing on PCs last week, on May 14. Apparently, at least two of the included patches are having trouble playing nice with some AV programs.

"Microsoft and McAfee have identified an issue on devices with McAfee Endpoint Security (ENS) Threat Prevention 10.x or McAfee Host Intrusion Prevention (Host IPS) 8.0 or McAfee VirusScan Enterprise (VSE) 8.8 installed. It may cause the system to have slow startup or become unresponsive at restart after installing this update," Microsoft stated in a support document.

McAfee is not the only AV program affected. Ghacks notes that Avast, Avira, ArcaBit, and Sophos are all having issues with the latest round of updates as well.

"We have had a few customers reporting that following on from the Microsoft Windows 14th May patches they are experiencing a hang on boot where the machines appear to get stuck on 'Configuring 30 percent'," Sophos states in a support document that was updated today.

According to Sophos, the problematic patches include KB4499164 (monthly rollup) and KB4499175 (security-only update). As of today, Sophos says it is working with Microsoft on a fix while "the investigation is ongoing."

Over on Avast's forums, there are complaints of the latest Patch Tuesday updates wreaking havoc with Windows 7 PCs running the free version of the company's AV software.

"Was running well until the April windows update cycle. Then it crashed. Installed the latest version of Avast, was fine again. May update cycle comes in, PC crashes again. Twice. First time, first reboot after Windows Update, runs for about 10 minutes, then it just froze. Booted into safe mode. Suspected it might be Avast again, did a repair. Next reboot, runs for about 10 minutes, Blue screen, Stop 3B system service exception," an Avast user wrote.

This is a bad look for Microsoft, and obviously frustrating for users who are affected by these updating mishaps. Furthermore, it's not just PCs running third-party AV software that are prone to issues.

We reported yesterday that a Windows 10 bug was causing some PCs not to boot when running the system restore feature. Fortunately there is a workaround available, but with the May 2019 update for Windows 10 looming, we can only cross our fingers that it will have a smooth roll out. If you're taking the plunge with Windows 10 and don't know which version is for you, check out our handy guide for the difference between Windows 10 Home and Pro.

Paul Lilly

Paul has been playing PC games and raking his knuckles on computer hardware since the Commodore 64. He does not have any tattoos, but thinks it would be cool to get one that reads LOAD"*",8,1. In his off time, he rides motorcycles and wrestles alligators (only one of those is true).

Latest in Windows
Microsoft Copilot
A rather pleasing Windows 11 update bug automatically uninstalls Copilot and unpins it from the taskbar, which is jolly nice of it
Microsoft's Task Manager in Windows 11
After years of complaints about Windows Task Manager displaying CPU utilization incorrectly, a fix is finally on its way
Microsoft Windows 11
The latest Windows 11 dev build gives you the ability to snap together commonly paired apps for access in a single click, and I'm already sold
Windows 11's new emoji button in the taskbar.
You might mock Microsoft's new emoji button in Windows 11 but as someone that's explained how to quickly access emojis and special characters too many times, I get it
Windows 10 operating system logo is displayed on a laptop screen for illustration photo. Gliwice, Poland on January 23, 2022.
Valve's monthly survey reveals that almost 45% of Steam users on PC are still using Windows 10 even with the sword of Damocles hanging over them
Microsoft Windows 11
If you installed Windows 11 with certain security updates and a USB stick, you may not get any more security updates warns Microsoft
Latest in News
KOTOR remake returns for annual tradition of reminding you it's still alive, but no you can't hear anything more about it until it comes back next year to say it again
Official artwork of Valorant showing the game's characters in a row
Valorant dev accepts there's too much random crap cluttering up the screen: 'The balance team generally agrees with this take'
Microsoft Copilot
A rather pleasing Windows 11 update bug automatically uninstalls Copilot and unpins it from the taskbar, which is jolly nice of it
Cognixion’s AI powered headset
New headset reads minds and uses AR, AI and machine learning to help people with locked-in-syndrome communicate with loved ones again
Discord Social SDK
Your Discord friends list may soon appear directly in the games you play
Nvidia CEO Jensen Huang holding an RTX 50-series card.
92% of Nvidia users turn on DLSS... if they've been lucky enough to bag an RTX 50-series card at launch AND have the Nvidia App installed