Misbehaving Microsoft Teams ad brings down the entire Windows 11 desktop

Enlarge / Home windows 11 sports activities built-in Microsoft Groups integration which will have introduced down the desktop and taskbar in a latest preview construct.

Andrew Cunningham

Microsoft launched a brand new construct of Home windows 11 to Home windows Insiders late last week because it prepares for the working system’s launch on October 5, however the first testers to put in the brand new construct shortly ran into problems—the taskbar, desktop, Settings app, and different core OS elements had been refusing to load. Microsoft shortly published a registry edit that resolved the issue, however the firm did not go into extra element on what went mistaken.

Essentially the most thorough examination of the issue comes from developer Daniel Aleksandersen’s Ctrl blog. As he explains, the “IrisService” talked about in Microsoft’s registry edit is a part of the Home windows Highlight service, which is liable for fetching new lock display wallpapers and different strategies and ads. From Aleksandersen’s publish:

Primarily based on the Microsoft-provided workaround, I narrowed the issue right down to a registry key that contained a serialized JSON blob. The blob contained an commercial for Microsoft Groups. The messaging and imagery within the promotion had been equivalent to the panel you get whenever you press the Home windows key + C on a Home windows account not already arrange with Groups.

In different phrases, it appears like an advert for one in all Home windows 11’s built-in apps went mistaken, and a lot of the working system’s consumer interface stopped working because of this.

This drawback combines two of latter-day Home windows’ most annoying tendencies. First, the working system relentlessly promotes and prioritizes Microsoft’s first-party apps and services. Second, the working system talks to Microsoft’s servers within the background to report diagnostic knowledge, fetch ads, and even obtain Home windows Retailer apps with out asking. As Aleksandersen appropriately factors out, these non-essential background processes should not be able to breaking core performance. And whereas this drawback occurred to beta builds of Home windows 11 and never one thing that is really working on most PCs, we’re lower than a month out from the official launch, and up to date Home windows 11 builds have largely shifted to bug-fix mode somewhat than including massive, new options. This precise construct of the working system was offered to IT organizations in the “release preview” Insider channel, which is often reserved for closing or near-final builds.

We have requested Microsoft whether or not it plans to make adjustments to maintain this type of drawback from occurring when the general public model of Home windows 11 begins rolling out subsequent month, and we’ll replace if we obtain a response. The problem should not have an effect on individuals who set up the newest Insider construct now, but when your pc is affected, use Microsoft’s recommended registry edit to get issues working once more.

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