The four built-in monitors and what each is for
Each tool covers a different time horizon. Task Manager (Ctrl+Shift+Esc) is the live view: the Performance tab graphs your Wi-Fi or Ethernet adapter's send and receive rate with a Utilization figure, and the Processes tab shows a Network column with per-app throughput at this very moment. App history is the monthly memory: its Network column totals usage over the last 30 days — with an important catch, because it only counts packaged and system apps, so Steam or Chrome never appear there.
Settings > Network & internet > Data usage is the household ledger: it totals the traffic per network connection and then ranks apps, this time including classic desktop programs. Resource Monitor (resmon) is the microscope: its Network tab lists every process with its current transfer rate in bytes per second, plus the active TCP connections. Pick the tool that matches the question — a live spike, a monthly total, or a mysterious process.
- Task Manager > Performance — live send/receive graph of the adapter with a Utilization percentage, updated every second
- Task Manager > App history — Network column with 30-day totals, packaged and system apps only
- Settings > Network & internet > Data usage — per-network totals and a per-app ranking, desktop programs included
- Resource Monitor > Network (resmon) — per-process transfer in bytes per second and live TCP connections
- The same Settings page has a reset button when you want a clean measurement period
Catching the hog in the act
When the connection feels slow, work in this order. Open Task Manager, go to Processes and click the Network column header to sort: whatever is moving data now jumps to the top — frequently OneDrive syncing, a browser playing video, or svchost.exe hosting Windows Update. For svchost, hover the cursor or check the Services tab and look for DoSvc, the Delivery Optimization service that uploads updates to other PCs; the App history and Data usage screens then confirm whether it is a chronic offender.
If the culprit is a browser, its own task manager gives the per-tab truth — Shift+Esc in Chrome and Edge shows which site is eating the connection. For mysteries tied to specific hours, open Settings > Network & internet > Data usage, note the total, and check again after the suspicious window: the per-app list then shows what grew. Marking the connection as metered (the same Settings page) tames Windows Update on a capped plan without touching anything else.
Stopping the drain — and reading the numbers honestly
The usual suspects are stable across machines: Windows Update with Delivery Optimization, OneDrive backup, game launchers patching in the background, and cloud backups. Windows 11 lets you cap update traffic: Settings > Windows Update > Advanced options > Delivery Optimization > Advanced options has separate percentage or Mbps limits for foreground and background downloads plus a monthly upload limit. You can also pause updates for up to five weeks straight from the Windows Update page.
Two honest notes. Telemetry and ordinary Windows chatter amount to megabytes per month, not gigabytes — chasing them saves cents; if you want less of it, that is a privacy decision, not a bandwidth one. If apps keep adding themselves to startup, change those entries in Windows Settings or Task Manager; Kleaner PRO does not disable startup entries. Its scheduled cleanup applies to supported temporary-file categories.
Questions and Answers
How do I see network usage for the last 30 days in Windows 11?
Task Manager's App history tab shows a Network column with roughly 30-day totals, and Settings > Network & internet > Data usage shows per-network totals with a per-app breakdown. Neither counts traffic from before Windows was installed or the stats were last reset.
What is downloading in the background on my PC at night?
Most often Windows Update with Delivery Optimization, OneDrive syncing new files, or a game launcher auto-patching. Sort Task Manager by the Network column or open Resource Monitor's Network tab during the window to see the exact process; the Data usage page shows the 30-day ranking afterwards.
Does Windows 11 have a built-in bandwidth limiter?
For updates, yes: Delivery Optimization's advanced options let you cap download and upload speeds for foreground and background traffic, plus a monthly upload limit. There is no built-in per-app limiter for arbitrary programs — that needs third-party tools or router QoS.
Know what is included before you buy.
The one-time 30-minute trial covers core tools. PRO-labelled features stay locked until a paid license is activated.
Read next
Write to us: [email protected]