Didn’t ask for Windows 10? Your PC may have downloaded it anyway

Microsoft confirms auto-download of massive Windows 10 files, even for users who don’t opt into the upgrade.

Whether you want Windows 10 or not, Microsoft says it may download the files to your PC regardless.

In a statement to the Inquirer, Microsoft confirmed that it automatically downloads Windows 10 installation files on eligible PCs, provided automatic updates are enabled through Windows Update. The download occurs even if users haven’t opted in through the Windows 10 reservation dialog.

“For individuals who have chosen to receive automatic updates through Windows Update, we help upgradable devices get ready for Windows 10 by downloading the files they’ll need if they decide to upgrade,” Microsoft told the Inquirer. “When the upgrade is ready, the customer will be prompted to install Windows 10 on the device.”

When reached for comment, Microsoft told PCWorld that the downloads occurred around the time of Windows 10's July 29 launch.

Why this matters: Microsoft appears to have crossed a line in its zeal to move people onto its latest operating system. Several reports indicate that the Windows 10 files take up as much as 6GB of storage in a hidden folder, potentially hamstringing machines that don’t have much free space left. Even worse, users who have strict data caps could face hefty overage charges for a massive download that they didn’t even ask for.

Bye-bye bandwidth

PCWorld has also heard from several readers on this issue, including one whose data plan has been affected by the automatic download. The reader, who runs a small computer repair shop, did not reserve Windows 10, yet recently noticed 6GB missing from his main desktop.

Upon further investigation, the reader’s daughter—who lives in an area without wired Internet and relies on Verizon Wireless for connectivity—had also automatically downloaded the installation files. “They do not wish to upgrade at this time, as they prefer to stay with Windows 7,” the reader said. “But they’re four days into their wireless plan, and have used more than half of their allowance because of the Windows 10 download.”

The Inquirer also spoke to a reader who said Windows 10 tries to install itself every time the machine is booted. It’s unclear if this is typical behavior for those who haven’t opted into the upgrade.

This isn’t the only instance where Windows 10 has gotten users into trouble with data caps. By default, the system also uses peer-to-peer networking to distribute Windows 10 updates, potentially eating up bandwidth without users’ knowledge.

What you can do

It’s worth noting that Windows Update provides users with a few auto-install options. Enabling “Important” updates provides security and stability fixes, while “Recommended” updates are meant to improve non-critical issues. There’s also a “Microsoft Update” option for other software such as Office. We’ve reached out to Microsoft to see which of these tiers enables the auto-download of Windows 10 files.

In the meantime, some users have reported success at removing the files and Windows 10 update prompts by entering the following into command prompt as an administrator:

WUSA /UNINSTALL /KB:3035583code>

This should at least remove Windows 10’s update notifications, but we haven’t confirmed whether it removes the installation files and prevents further downloads.

Join the newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection

Tags Windows 10

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

Jared Newman

PC World (US online)
Show Comments

Cool Tech

SanDisk MicroSDXC™ for Nintendo® Switch™

Learn more >

Breitling Superocean Heritage Chronographe 44

Learn more >

Toys for Boys

Family Friendly

Panasonic 4K UHD Blu-Ray Player and Full HD Recorder with Netflix - UBT1GL-K

Learn more >

Stocking Stuffer

Razer DeathAdder Expert Ergonomic Gaming Mouse

Learn more >

Christmas Gift Guide

Click for more ›

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Walid Mikhael

Brother QL-820NWB Professional Label Printer

It’s easy to set up, it’s compact and quiet when printing and to top if off, the print quality is excellent. This is hands down the best printer I’ve used for printing labels.

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Ratchada Dunn

Sharp PN-40TC1 Huddle Board

The Huddle Board’s built in program; Sharp Touch Viewing software allows us to easily manipulate and edit our documents (jpegs and PDFs) all at the same time on the dashboard.

George Khoury

Sharp PN-40TC1 Huddle Board

The biggest perks for me would be that it comes with easy to use and comprehensive programs that make the collaboration process a whole lot more intuitive and organic

David Coyle

Brother PocketJet PJ-773 A4 Portable Thermal Printer

I rate the printer as a 5 out of 5 stars as it has been able to fit seamlessly into my busy and mobile lifestyle.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?