How to check Uptime in Windows 11/10

Press Ctrl + Shift + Esc, select Performance, then CPU, and read the Up time value to check uptime in Windows 11 or Windows 10.

The sections below add the CMD and PowerShell commands, a way to check another PC, how to reset the counter, and why a PC you shut down last night can still show days of uptime.

How to check uptime in Windows 11/10

1. Press Ctrl + Shift + Esc to open Task Manager.
2. Select More details at the bottom of the window if Task Manager opens in its condensed view.
3. Select Performance, then select CPU.
4. Read Up time below the graph. The format is days:hours:minutes:seconds, so 4:19:22:59 means 4 days, 19 hours, 22 minutes and 59 seconds.

The same Performance view shows memory and graphics load too, so you can look at installed RAM and GPU usage in one window.

Check uptime with Task Manager, CMD or PowerShell

Your situation	Use this	What you get
You want a quick look	Task Manager, Performance > CPU	Up time as a running clock
You already have Command Prompt open	powershell -NoProfile -Command "(Get-Date) - (Get-CimInstance Win32_OperatingSystem).LastBootUpTime"	Days, hours, minutes and seconds
You use Windows PowerShell 5.1	(Get-Date) - (Get-CimInstance Win32_OperatingSystem).LastBootUpTime	The same elapsed time, plus totals
You use PowerShell 7	Get-Uptime	Elapsed time, or the boot date with -Since
You need the uptime of another PC	Get-CimInstance with -ComputerName	The remote PC's last boot date
You need past restarts, not only the last one	Event Viewer, System log	A dated list of shutdowns and restarts

How to check uptime in Windows 11 from CMD

Command Prompt has no dedicated uptime command, but it can call PowerShell for one line and print the result in the same window.

powershell -NoProfile -Command "(Get-Date) - (Get-CimInstance Win32_OperatingSystem).LastBootUpTime"

LastBootUpTime holds the date and time the operating system was last restarted. Subtracting it from the current time gives the uptime.

You should see: lines such as Days, Hours, Minutes and Seconds, followed by totals such as TotalHours.

To print only the boot date, run powershell -NoProfile -Command "(Get-CimInstance Win32_OperatingSystem).LastBootUpTime".

How to check system uptime in PowerShell

This one-liner works in Windows PowerShell 5.1 and PowerShell 7, so it is the safest choice for a script that runs on several PCs.

(Get-Date) - (Get-CimInstance Win32_OperatingSystem).LastBootUpTime

Get-CimInstance reads the Win32_OperatingSystem class from WMI on the local computer, and the subtraction returns a time span.

You should see: a Days value that matches the first number of Up time in Task Manager.

Get-Uptime command in PowerShell 7

Get-Uptime arrived in PowerShell 6.0, so Windows PowerShell 5.1 does not have it. You can check your PowerShell version before you rely on it in a script.

Get-Uptime
Get-Uptime -Since

The first line returns the time elapsed since the last boot. The second returns the date and time of that boot instead.

You should see: Days, Hours and Minutes from the first line, and a date such as Tuesday, June 18, 2019 2:34:56 PM from the second.

Get-Uptime uses a high-resolution timer, so its answer can differ slightly from LastBootUpTime.

Get-ComputerInfo uptime in Windows PowerShell

Get-ComputerInfo has shipped since Windows PowerShell 5.1 and can return the uptime and the boot date together.

Get-ComputerInfo -Property OsUptime, OsLastBootUpTime

OsUptime is the interval since the operating system last restarted. OsLastBootUpTime is the date and time of that restart.

You should see: both properties listed with their values.

Check uptime on a remote Windows computer

Run this from an account with rights on the other PC. Replace Server01 with its name or IP address.

Get-CimInstance -ClassName Win32_OperatingSystem -ComputerName Server01 | Select-Object CSName, LastBootUpTime

With -ComputerName, the cmdlet connects over WSMan and queries that computer instead of your own. CSName confirms which PC answered.

You should see: one row with the computer name and its last boot date.

Why Windows 11 uptime does not reset after shutdown

Fast Startup is the reason. In a default shutdown, Windows closes your user session and saves the kernel to the hibernation file, then loads it again at the next power-on.

Microsoft notes that the time between kernel reboots can be much longer as a result, because the kernel, drivers and services are preserved and restored on a user-initiated shutdown rather than restarted.

What you do	Does uptime reset?	Why
Restart from the Start menu	Yes	Windows boots again
Shut down with Fast Startup on	No	The kernel is saved and restored
Shut down with Fast Startup off	Yes	The next start is a cold start
Run shutdown /s	Yes	Fast Startup preparation applies only with the /hybrid switch
Sleep	No	The PC resumes where you left off
Hibernate	No	Drivers and services are restored, not restarted
Sign out	No	Only your user session ends

How do I reset Windows 11 uptime?

Task Manager has no reset button. The counter measures time since the last boot, so a restart is what clears it.

1. Save your work and close your apps.
2. Select Start, select the Power button, then select Restart.
3. Or open Command Prompt and run shutdown /r /t 0 to restart with no delay.
4. After you sign back in, press Ctrl + Shift + Esc and open Performance > CPU. Up time now shows only the minutes since the restart.

How to turn off Fast Startup so uptime resets after shutdown

Microsoft does not recommend disabling this state, and restarting already resets the counter. Change it only if you need every shutdown to be a full one.

1. Open Control Panel, then open Power Options.
2. Select Choose what the power buttons do.
3. Clear the Turn on fast startup (recommended) check box.
4. Select Save settings.
5. Shut down, start the PC, and check Up time again. It now counts from this start.

How to see when Windows 11 last restarted in Event Viewer

Uptime tells you about the current boot only. The System log in Windows Event Viewer keeps a dated record of earlier shutdowns and restarts.

1. Select Start, type Event Viewer, then press Enter.
2. Expand Windows Logs, then select System.
3. Select Filter Current Log in the right pane.
4. Type 41,1074,6006,6008 in the event ID box, then select OK.
5. Read the Date and Time column, using the event ID table below to see what each entry means.

The same filter works from PowerShell: Get-WinEvent -FilterHashtable @{LogName='System'; Id=41,1074,6006,6008} -MaxEvents 20.

Windows restart event IDs explained

Event ID	What it means
41	Windows restarted without a complete shutdown, for example after a crash or power loss
1074	An app caused a shutdown or restart, or a user started one from the Start menu or Ctrl + Alt + Del
6006	Windows was adequately turned off
6008	The previous shutdown was unexpected

Windows uptime problems and error messages

Uptime did not reset after shutting down the PC

Fast Startup saved and restored the kernel, so Windows did not count a new boot.

1. Select Start, select the Power button, then select Restart.
2. Open Task Manager and check Up time again.

Get-Uptime is not recognized as a command

You are in Windows PowerShell 5.1, and Get-Uptime needs PowerShell 6.0 or later.

1. Run (Get-Date) - (Get-CimInstance Win32_OperatingSystem).LastBootUpTime instead.
2. Use Get-Uptime only from a PowerShell 7 window.

wmic is not recognized in Windows 11

Microsoft removed WMIC from Windows 11 version 24H2 and later, and it is no longer available as an optional feature.

1. Run the Get-CimInstance command from the CMD section above. WMI itself is unaffected, only the old command-line tool is gone.
2. Update any script that reads boot time through wmic to use Get-CimInstance as well.

Get-CimInstance shows Access is denied for a remote PC

Your account has no rights to query WMI on that computer, and Get-CimInstance has no Credential parameter of its own.

1. Run $CimSession = New-CimSession -ComputerName Server01 -Credential (Get-Credential) and enter an account with rights on that PC.
2. Run Get-CimInstance -CimSession $CimSession -ClassName Win32_OperatingSystem | Select-Object CSName, LastBootUpTime.
3. Run Get-CimSession | Remove-CimSession when you finish.

Uptime is much shorter than expected

The PC restarted without you asking it to, often after a Stop error, a power loss, or an update.

1. Filter the System log for event IDs 41, 1074 and 6008 as shown above.
2. Check the time of the newest entry against the Up time value.
3. If event ID 41 shows a nonzero BugcheckCode, treat it as a Stop error. A zero code can point to a power problem such as a drained battery or a failing power supply.

Windows uptime FAQ

How to check uptime in Windows 11 from cmd?

Open Command Prompt and run powershell -NoProfile -Command "(Get-Date) - (Get-CimInstance Win32_OperatingSystem).LastBootUpTime". It prints days, hours, minutes and seconds since the last boot. The old wmic route no longer works on Windows 11 version 24H2 and later.

How to check PC uptime in Windows 11?

Press Ctrl + Shift + Esc to open Task Manager, select Performance, then select CPU. The Up time value below the graph shows how long the PC has been running since its last boot, in days, hours, minutes and seconds.

How to check laptop uptime in Windows 11?

Use Task Manager the same way as on a desktop: Performance, then CPU, then Up time. Closing the lid to sleep or hibernate does not reset the value, and neither does a default shutdown with Fast Startup on, so laptops often show long uptimes.

How to check computer uptime in Windows 11?

Run (Get-Date) - (Get-CimInstance Win32_OperatingSystem).LastBootUpTime in PowerShell for a figure you can copy. For a different computer on your network, add -ComputerName and the computer's name to Get-CimInstance, and read its last boot date instead.

How to check system uptime in Windows 11?

In PowerShell 7, run Get-Uptime for the elapsed time, or Get-Uptime -Since for the date of the last boot. In Windows PowerShell 5.1, which is built into Windows, use Get-ComputerInfo -Property OsUptime, OsLastBootUpTime for the same two answers.

How to see Windows 11 uptime?

Open Task Manager with Ctrl + Shift + Esc and look under Performance, then CPU. A reading of 4:19:22:59 means 4 days, 19 hours, 22 minutes and 59 seconds. The clock runs live while the window stays open.