Windows installs updates without permission, researchers say

'Surprise updates' may be side effect of June's monster patch day, says Windows Secrets

Windows is installing "surprise updates" against the wishes of some users, who have expressly set up the operating system not to deploy patches without permission, researchers charged today.

Numerous readers of the popular Windows Secrets newsletter have reported that they have watched their PCs install updates from the June 9 set of security patches as they've rebooted or when they've turned on their machines, said Brian Livingston, the newsletter's editorial director. Those users have set options in Windows Update (WU), the operating system's default update service, to require their okay before installing patches, or before downloading and installing updates.

"If you have an incomplete update download, Windows won't display the fact that you have updates," said Livingston, referring to the icon in the taskbar that should appear when updates are pending approval. "Then at shutdown or reboot, those updates start installing, even though the user has set Windows Update not to do so."

Only users who have set WU to the "Automatic" setting should have patches downloaded and installed without any additional action on their part.

Windows Secrets staffers, including Livingston, have observed the surprise updates, although they have not been able to reproduce the bug, Livingston acknowledged. The bug affected users of both Windows XP and Vista.

Livingston speculated that the surprise installs were due to the record number of updates Microsoft issued on June 9. The collection of 10 security updates delivered a record 31 individual bug patches, the most in a single month since the company began regularly-scheduled updates in 2003.

The large number may have exceeded Microsoft's server capacity, which in turn may have resulted in some downloads failing before they were finished. "The 10 security bulletins may have created server overload that affected more people than usual," said Livingston.

Partial downloads are, in fact, a known issue with Windows Update. "Microsoft already has a Knowledge Base document that says if a download doesn't complete, then Automatic Updates terminates, and the remainder [of the update] is updated a few days later," Livingston said.

He pointed to a Microsoft support document that admits incomplete downloads can disable the usual display of the notification icon in the Windows system tray.

A Microsoft manager denied that the surprise-update issue was a bug, and said it was essentially business-as-usual. "The behavior we expect to see is for users to be notified about updates that are available for them to install," Paul Pottorff, a senior product manager with the Windows Update team, said in an e-mail sent to Computerworld as well as Windows Secrets. "[But] if there is only a throttled update, they shouldn't be notified. This behavior has been the same for a long time and hasn't even been touched for more than nine months."

This isn't the first time that Microsoft has been rebuked for installing updates without users' permission. In September 2007, Windows Secrets took the company to task for secretly updating files related to Windows Update itself; Microsoft said the concerns were unwarranted.

Later, Microsoft confirmed that the stealth WU update crippled some Windows XP machines.

Windows Secretsoffers more details about the bug, as well as workarounds, on its Web site.

Join the Good Gear Guide newsletter!

Error: Please check your email address.

Tags MicrosoftWindows

Our Back to Business guide highlights the best products for you to boost your productivity at home, on the road, at the office, or in the classroom.

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Gregg Keizer

Computerworld
Show Comments

Essentials

Lexar® JumpDrive® S57 USB 3.0 flash drive

Learn more >

Microsoft L5V-00027 Sculpt Ergonomic Keyboard Desktop

Learn more >

Mobile

Lexar® JumpDrive® S45 USB 3.0 flash drive 

Learn more >

Exec

Lexar® Professional 1800x microSDHC™/microSDXC™ UHS-II cards 

Learn more >

Lexar® JumpDrive® C20c USB Type-C flash drive 

Learn more >

Audio-Technica ATH-ANC70 Noise Cancelling Headphones

Learn more >

HD Pan/Tilt Wi-Fi Camera with Night Vision NC450

Learn more >

Budget

Back To Business Guide

Click for more ›

Most Popular Reviews

Latest News Articles

Resources

GGG Evaluation Team

Michael Hargreaves

Dell XPS 13

I’d happily recommend this touchscreen laptop and Windows 10 as a great way to get serious work done at a desk or on the road.

Aysha Strobbe

HP Spectre

Ultimately, I think the Windows 10 environment is excellent for me as it caters for so many different uses. The inclusion of the Xbox app is also great for when you need some downtime too!

Mark Escubio

Lenovo Yoga

For me, the Xbox Play Anywhere is a great new feature as it allows you to play your current Xbox games with higher resolutions and better graphics without forking out extra cash for another copy. Although available titles are still scarce, but I’m sure it will grow in time.

Kathy Cassidy

STYLISTIC Q702

First impression on unpacking the Q702 test unit was the solid feel and clean, minimalist styling.

Anthony Grifoni

STYLISTIC Q572

For work use, Microsoft Word and Excel programs pre-installed on the device are adequate for preparing short documents.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?