Windows 11 Update Download Time by Type
| Update Type | Typical Size | Download Time at 100 Mbps | Download Time at 25 Mbps |
|---|---|---|---|
| Small cumulative/security update | 100MB to 1GB | Under 2 minutes | 2 to 7 minutes |
| Driver or definition update | 50 to 300MB | Under 1 minute | Under 3 minutes |
| Larger feature update | 3 to 5GB | 5 to 8 minutes | 20 to 33 minutes |
| Major annual feature release | 5GB or more | 8 minutes or more | 33 minutes or more |
Visual Comparison: Download Time at 100 Mbps by Update Type
These figures reflect the download portion only, using 80 percent of advertised speed as a realistic working number. They do not include the time Windows spends installing files and restarting, which is a separate process that runs after the download completes.
Why the Download Is Usually the Fast Part
Windows Update downloads files in the background while you keep using your computer normally, so most people never notice the download itself happening. What creates the feeling of a "slow update" is almost always the installation phase: Windows applying the changes, checking system files, and restarting one or more times. On an older or slower hard drive, especially a traditional spinning disk rather than an SSD, this installation phase can take significantly longer than the download, sometimes 20 minutes or more for a major feature update.
Why a Windows Update Might Download Slowly
- Background bandwidth limits. Windows Update intentionally throttles its own download speed by default so it does not interfere with whatever else you are doing online. You can adjust this in Settings under Windows Update, Advanced options, Delivery Optimization.
- Peak time server demand. On patch Tuesday or right after a major feature release, Microsoft's update servers handle a surge of traffic worldwide, which can slow individual download speeds regardless of your connection.
- A slow or congested WiFi connection. See our full guide to why WiFi runs slower than advertised for how much distance and interference can cut into real world speed.
- Delivery Optimization pulling from other PCs. By default, Windows can download update parts from other Windows devices on your local network or across the internet, which usually speeds things up but can occasionally behave unpredictably on unusual network setups.
How to Speed Up a Windows 11 Update
- Check Delivery Optimization settings in Settings, Windows Update, Advanced options, to make sure it is not unnecessarily capping your download speed.
- Connect via Ethernet instead of WiFi if the update is large and you want the fastest possible download.
- Close bandwidth heavy apps like streaming services or large downloads running at the same time.
- Install on an SSD rather than a traditional hard drive if possible, since the installation phase, not the download, is usually the real bottleneck on older hardware.
Frequently Asked Questions
How long does a Windows 11 update take to download?
Small cumulative updates typically download in under 2 minutes. Larger feature updates, usually 3 to 5GB, take about 5 to 8 minutes on a 100 Mbps connection.
Why does my Windows update say "downloading" for a long time?
This can be due to Delivery Optimization throttling the download speed intentionally, high demand on Microsoft's servers around a major release, or a slow WiFi connection losing speed to distance or interference.
Is the install slower than the download for Windows updates?
Often, yes, especially for larger feature updates on a traditional hard drive rather than an SSD. The installation and restart process frequently takes longer in practice than the download itself.
Can I speed up a Windows 11 update?
Checking Delivery Optimization settings, using a wired connection, and closing other bandwidth heavy apps during the download are the most effective, practical steps.
Do all Windows 11 updates take the same amount of time?
No. Small monthly security patches are fast, while larger seasonal feature updates or major annual version upgrades take noticeably longer for both the download and install phases.