Windows Delivery Optimization is a peer-to-peer update sharing system built into Windows 10 and Windows 11 that allows your PC to upload updates and Microsoft Store apps to other computers on your local network or across the internet. By default, this feature is enabled and actively consuming your bandwidth to help Microsoft reduce server load—without asking your permission first.
Key Takeaways
- Delivery Optimization shares Windows updates and apps from your PC to other computers by default, draining your bandwidth
- The feature is buried five clicks deep in Settings, making it invisible to most users
- Disabling it forces direct downloads from Microsoft servers, improving speed for single-PC households
- You can restrict sharing to local network only as a middle ground for multi-PC homes
- Applies to both Windows 10 and Windows 11 across all versions
What is Windows Delivery Optimization and why should you care?
Windows Delivery Optimization also sends updates and apps from your PC to other PCs on your local network or PCs on the internet, based on your settings. When enabled at its default level, your computer becomes an unwilling participant in Microsoft’s distributed update network. Instead of downloading updates solely from Microsoft’s servers, your PC uploads those same updates to other computers—consuming your upload bandwidth, slowing your browsing, and potentially causing lag during gaming or video calls.
The problem intensifies on metered connections where data caps apply. A single Windows update shared across multiple internet-connected PCs can rack up unexpected data usage. For users paying by the gigabyte or dealing with bandwidth throttling, this hidden drain becomes a real cost. Microsoft frames this as bandwidth optimization for the company, not for you—which is why the setting exists in the first place.
How Windows Delivery Optimization differs from direct updates
The traditional method of updating Windows involves downloading updates directly from Microsoft’s own servers. This approach is more secure, keeps your bandwidth entirely private, and ensures you get updates from a single trusted source. When Delivery Optimization is disabled, your PC reverts to this direct-download model, which means faster updates for households with a single computer and zero bandwidth shared with strangers on the internet.
For multi-PC environments like offices or homes with several computers, local network sharing can actually reduce overall internet usage—computers download once from Microsoft, then share that update with each other over your home network rather than each downloading separately from the internet. This is genuinely useful. The problem is that Microsoft defaults to internet-wide sharing, not just local network sharing, and most users never find the setting to change it.
Enterprises managing thousands of computers often use Windows Server Update Services (WSUS), a dedicated system that handles updates across 13,000+ PCs without any peer-to-peer internet fetching. This approach proves that centralized update management works at scale—yet Microsoft pushes peer distribution to consumer users.
How to disable Windows Delivery Optimization
Disabling Delivery Optimization requires navigating Settings, but the path is straightforward once you know where to look. Press Windows + I to open Settings, then navigate to Windows Update > Advanced options > Delivery Optimization. Under the option labeled Allow downloads from other PCs, select Off. After making this change, return to Windows Update and click Check for updates to verify that your PC now downloads directly from Microsoft servers.
If you prefer a middle ground—allowing local network sharing while blocking internet sharing—select Devices on my local network instead of Off. This setting reduces your overall internet bandwidth consumption while still benefiting from efficient updates across multiple computers in your home or office. The choice depends entirely on your network setup and priorities.
The reason this setting is difficult to find matters: it is buried five clicks deep in the Settings interface, making it invisible to users who are not actively searching for it. Microsoft’s design choice to hide this option suggests the company prefers users remain unaware of the bandwidth drain, since awareness leads to disabling the feature.
Why this matters for your internet speed
Background upload activity from Delivery Optimization can noticeably impact your internet experience. Upload bandwidth directly affects video call quality, cloud backup speed, and general responsiveness when browsing. If you game online, even modest background uploads create latency spikes that affect competitive performance. On slower connections—anything under 25 Mbps upload speed—this impact becomes severe.
The feature also explains mysterious slow internet complaints that disappear after a restart. Delivery Optimization runs continuously in the background, and disabling it immediately frees that bandwidth for your actual use. For remote workers relying on video conferencing, the difference between having Delivery Optimization enabled and disabled can be the gap between a clear call and a pixelated, laggy one.
Frequently asked questions
Does disabling Delivery Optimization slow down Windows updates?
No. Disabling Delivery Optimization actually speeds up updates for most users because your PC downloads directly from Microsoft’s servers instead of waiting for peer connections. The only scenario where disabling slows updates is if you have multiple computers on your local network and previously benefited from sharing—but even then, the difference is minimal compared to the bandwidth you reclaim.
Is Delivery Optimization a security risk?
Delivery Optimization shares update files, which are signed and verified by Microsoft, so the security risk from the feature itself is low. The real concern is privacy and bandwidth control—you are exposing your upload activity to unknown computers on the internet without explicit consent. Disabling the feature eliminates this exposure entirely.
Can I re-enable Delivery Optimization later if I change my mind?
Yes. Return to Settings > Windows Update > Advanced options > Delivery Optimization and toggle Allow downloads from other PCs back to On. You can also switch between Off and Devices on my local network at any time without affecting your system.
Windows Delivery Optimization is a feature designed to benefit Microsoft’s infrastructure, not yours. Disabling it is a straightforward way to reclaim bandwidth that belongs to you, improve your internet speed, and eliminate background data consumption on metered connections. The fact that this setting is hidden so deeply in the interface suggests Microsoft hopes users never discover it—which makes finding and changing it one of the smartest optimizations you can make to your Windows PC.
This article was written with AI assistance and editorially reviewed.
Source: Tom's Guide
