Member Avatar for rproffitt

There's a lot of chatter about W10 but just tripped over this due a complaint about network speed fluctuations. Here's a google about what I turned off.

https://www.google.com/#q=disable+windows+10+sharing+updates

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Short summary and context: the “sharing updates” behavior is Windows Update Delivery Optimization (DO) — a built-in peer‑to‑peer system that can both download update pieces from other PCs and upload pieces to them. That peer activity can saturate a small upstream (exactly the symptom described), but it is a feature you can control rather than malware. (support.microsoft.com)

Quick, safe fixes for home networks (no special tools required): open Settings → Windows Update → Advanced options → Delivery Optimization. Turn off “Allow downloads from other PCs” or choose “Devices on my local network” to stop internet peering. In Delivery Optimization → Advanced options set an absolute or percentage download/upload cap and a monthly upload limit to prevent the updating machine from taking the whole link. If those switches are unavailable the device may be managed by policy (domain/MDM). (support.microsoft.com)

If network gear control is needed: DO uses TCP port 7680 for peer traffic and can use Teredo (UDP 3544) for cross‑NAT peering; it also talks to Microsoft over HTTPS. Blocking 7680 will stop P2P, but clients will still get updates over HTTP/HTTPS (so blocking 7680 alone may not prevent link saturation). Router QoS can throttle by the updating PC’s IP or by these ports, but machine‑side DO bandwidth limits or setting DownloadMode (Group Policy / MDM) to a non‑peering mode is usually more reliable. For managed environments, use the Delivery Optimization Group Policy / MDM settings (DODownloadMode and related policies). (learn.microsoft.com)

Troubleshooting and diagnostics: check Delivery Optimization’s Activity monitor in Settings for per‑month upload/download stats, or run the DO PowerShell cmdlets to inspect current jobs and monthly snapshots, for example:

Get-DeliveryOptimizationStatus
Get-DeliveryOptimizationPerfSnapThisMonth

Unplugging the updating PC is a valid immediate test (as did) but long‑term fixes are the settings above. Disabling the DO service or registry hacks can break Store/Update behavior, so prefer the built‑in toggles, bandwidth caps, metered‑connection settings, or a Group Policy change for a durable solution. (learn.microsoft.com)

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Member Avatar for rubberman

Microsoft has happily turned Win10 into a virus - "whatever is yours is ours" seems to be their attitude these days. Disabling this cruft is a total PITA. My attorney who is a very happy Mac user had to get a Win10 system recently and the first thing that happened to him was an infection of adware/malware making the system almost impossible to use. He was NOT a happy camper!

Member Avatar for rproffitt

. While this didn't happen to me (ad/malware.) I have a routine I do on a new Windows that works for me. Head to Ninite.com and install my alternative web browsers then install 2 add ons. Between Adblock+ and Web Of Trust, it seems to really help. It's been a year plus and my work horse Windows 8 and 10 machines have yet to suffer such a fate. Not only that but I didn't install another antivirus. It's sort of a test for Defender. So far, so good. Yes I use scanners from time to time to see if anything managed to crawl in.

The download sites today are toxic. Spread the word about Ninite is my response.

Member Avatar for ronin7752

OK... I suspected this from the start... then didn't... Just today confirmed that Windows 10 updates will take all of the Internet bandwidth off of my router . Dead serious. Was upgrading a machine for a customer and noticed that when it hit updates, my Internet access literally locked up on all systems on my network. Just on a whim, I reached over and unplugged the network cable from the updating machine... everything came back up. I waited a few minutes and plugged it in again. Everything crashes again. Repeated two more times.

I have a high-end Netgear Gigabit router on a 3Mbs provider. I have never had this kind of problem before. (I know 3Mbs is not great, but it is all I can get in my mountain home/business.)

I have been noticing this slowdown frequently. I have two systems updated to Windows 10. I noticed the slowdown during updates, but also noticed it when these systems were NOT updating. This is what made me think it must be my provider and not my computers causing the slowdown. However, this "hidden" setting allows any M$ P2P updating to be pulled from your systems at any time -- and completely hidden. This explains why the slowdowns are random, and have nothing to do with the provider.

This is a massive problem. It will get worse as more people switch and upgrade to Windows 10. M$ seems to have blocked the ability to truly swtich this feature off -- and the worst problem is really NOT the P2P sharing, but the ability of Win 10 updates to "suck up" all Internet bandwidth being supplied to your network.

The only thing I can think of to stop this is to throttle these updates in your router using QoS. But I don't know if M$ updates use a specific port that can be throttled.

Any ideas?

Edited by ronin7752
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