The Windows Task Manager (taskmgr.exe) is the first-line live inspection tool that ships with every Windows install. While Process Explorer is more powerful, Task Manager is always available — including in restricted user sessions where Sysinternals tools are not.
Key tabs:
- Processes — CPU/memory/disk/network per process.
- Performance — overall resource graphs.
- App history — per-user metered usage (UWP apps).
- Startup — quick equivalent to Autoruns' "Logon" tab.
- Services — start/stop and link to the Services console.