On September 19, Microsoft shipped Windows 11 Insider Preview Build 26220.6690 (KB5065786) to the Dev Channel, packing two new Copilot-driven features and a handful of urgent fixes. The most notable additions — on-the-spot translation through Click to Do and the ability to share a window directly to Copilot from the taskbar — aim to make AI assistance more immediate, but they come alongside fresh hardware compatibility snags that could trip up unwary testers.

What’s Actually in This Build

This cumulative update targets version 25H2 and is strictly for Dev Channel Insiders. Everything is gated behind Microsoft’s Controlled Feature Rollout, so even after installing, you may not see every change right away.

Translation That Appears Where You Need It

If you’re on a Copilot+ PC and live outside the EEA or China, you may notice a new translation option when you use Click to Do on text. When the tool detects language that differs from your system’s display or preferred language, a suggestion appears to send the selected text to the Copilot app for translation. Instead of copying to a browser or app, you jump straight from selection to translated result. Microsoft says the feature is still rolling out in stages, so it won’t light up for everyone immediately.

Share a Window, Not Just a Screenshot

An experimental twist lands on the taskbar: hover over any running window’s thumbnail, and you might see a “Share with Copilot” option. Click it, and Copilot launches a conversation that can use Copilot Vision to scan and analyze the contents of that window. The idea is to let you talk about what’s on screen without grabbing a screenshot or explaining context from scratch. It’s a direct line from any app to AI analysis, though Microsoft hasn’t detailed exactly which app contents Vision can read.

Desktop and Settings Get Small But Useful Tweaks

Desktop Spotlight now shows right-click menu options to learn more about the current background or skip to the next one. It’s a minor polish, but anyone who’s ever wanted to identify a Spotlight image will appreciate it. Over in Settings, the Accounts page has been renamed to “Your accounts” and given a visual refresh to make managing Microsoft, work, and app accounts feel less buried.

The Fixes That Have Landed

Alongside the new features, this build ships several targeted fixes that address real annoyances:

  • File Explorer: No more freezes when you type a UNC server name directly into the address bar.
  • Windows Update: Installations that previously failed with error 0x80070002 should now proceed.
  • Audio: An audio failure that followed recent updates has been addressed, though Microsoft notes there can be multiple root causes and asks for Feedback Hub reports if problems persist.
  • Settings: The “Add an optional feature” page no longer gets stuck loading under certain administrator protection states.

Known Issues: What Could Break

Dev Channel builds are never polished, but this one ships with a list of snags that could disrupt daily use. The most impactful:

  • Click to Do display glitch: Launching Click to Do from the right-edge swipe on a multi-monitor setup may show the animation on the wrong screen.
  • Lock-screen media controls may not appear in some cases, leaving you without playback controls when the PC is locked.
  • Taskbar animations turned off: Microsoft temporarily disabled new preview animations because they interfered with the share-to-Copilot feature. Auto-hide users might also see parts of the system tray peek up unexpectedly.
  • Windows Studio Effects breaks external webcams: If you enable “Use Windows Studio Effects” on certain USB webcams, the camera preview may fail due to firmware incompatibility. The workaround is to turn Studio Effects off entirely until a driver or firmware fix surfaces.
  • PIX cannot play back GPU captures: Developers who rely on Microsoft’s PIX tool for graphics debugging are stuck — GPU capture playback simply doesn’t work on this OS version. Microsoft says a PIX update is planned by the end of September, but until then, you’ll need private builds or alternative tools.
  • Xbox controller bugchecks: Some Insiders have hit blue screens when using certain Xbox controllers over Bluetooth. Microsoft suggests uninstalling the offending driver via Device Manager (look for an oemXXX.inf entry), but that’s a stopgap, not a fix.

Community reports also hint at audio driver yellow exclamation marks in Device Manager and hibernation bugchecks in earlier 26220 builds, reinforcing the message: this is not daily-driver material.

How We Got Here

The 26220 series arrived this summer as the Dev Channel shifted to enablement-package servicing for the 25H2 update. Microsoft has used these flights to push Copilot deeper into the shell — earlier builds introduced Click to Do itself, Narrator improvements, and Braille tooling. The strategy is clear: tie AI actions directly to the places where users already work, whether that’s a text selection, a taskbar thumbnail, or a settings page. Controlled rollouts let the company collect telemetry from a subset of devices and adjust before things go wide. September’s batch, including today’s 26220.6690, doubles down on that approach while also acknowledging that preview builds can break toolchains — the PIX issue is a reminder that even developer-oriented features can fall out of sync.

What Should You Do?

Your move depends on who you are and what hardware you’re running.

If You’re an Insider Testing on a Spare Machine

Go ahead and install — but first, create a system image or at least a restore point. If you rely on an external webcam for calls or streaming, validate your camera with Studio Effects off before joining a meeting. If you use an Xbox controller over Bluetooth, have the Device Manager workaround handy. File Explorer, update, and Settings fixes are worth grabbing, and the new AI features are worth a spin if your device qualifies.

If You’re a Developer or Creator

Hold off unless you can afford downtime. PIX playback is broken; if GPU capture analysis is part of your workflow, wait for the PIX update expected before October. Content creators using OBS with an external camera should test the Studio Effects issue in a lab, not on a production stream. The audio fix may help some, but audio problems are notoriously multi-causal — your specific pop or crackle may persist.

If You’re an IT Admin or Enterprise Evaluator

Do not pilot this build on production hardware. Dev Channel flights are for experimentation. Use Beta or Release Preview builds for validation that mirrors what your organization will eventually deploy. Feature divergence from server-side rollouts means two machines on the same build can behave differently — a nightmare for reproducibility. Treat this flight as a technology preview of where Microsoft is steering Copilot integration, nothing more.

What to Watch Next

The PIX update slated for late September is the most concrete timeline to track. If you’re waiting on that, watch the Windows Insider Blog and Flight Hub. Beyond that, Microsoft will likely continue tuning the share-to-Copilot experience — feedback on privacy, performance, and app compatibility will shape whether this stays experimental or becomes a staple. The Studio Effects and controller issues will need firmware or driver fixes from hardware partners, so check your webcam manufacturer’s support page or your controller’s firmware tool. For now, the 26220.6690 build is a classic Dev Channel cocktail: genuine AI convenience mixed with a splash of hardware heartburn.