How to Upgrade to Windows 11 26H2 Using a Single Command

Step 1. Open PowerShell as Administrator

Right-click the Start button, and select Terminal (Admin).

Step 2. Run the Correct Command

Copy and paste the correct command for your CPU into Windows PowerShell, then press Enter:

• Most Intel and AMD computers which use the x64 version, use the command below:

Invoke-WebRequest -Uri "https://catalog.sf.dl.delivery.mp.microsoft.com/filestreamingservice/files/94520a88-858f-4832-a57d-7211f6d84a4e/public/Windows11.0-KB5121794-x64_5e20a3cce48d6611b16bdec42b07167f5456586a.msu" -OutFile "$env:TEMP\kb5121794.msu"; Start-Process "wusa.exe" -ArgumentList "$env:TEMP\kb5121794.msu /quiet /norestart" -Wait; $choice = Read-Host "The update has been installed. Restart your computer now? (y/n)"; if ($choice -eq "y") { Restart-Computer -Force }

• For Windows devices powered by ARM processors, such as some Snapdragon-based PCs, use the following command instead:

Invoke-WebRequest -Uri "https://catalog.sf.dl.delivery.mp.microsoft.com/filestreamingservice/files/9d8dc3d0-9cbf-4eb1-9411-722e3e6a19b3/public/Windows11.0-KB5121794-arm64_77a76caf2d362bb293a4d18058388f2717365abe.msu" -OutFile "$env:TEMP\kb5121794.msu"; Start-Process "wusa.exe" -ArgumentList "$env:TEMP\kb5121794.msu /quiet /norestart" -Wait; $choice = Read-Host "The update has been installed. Restart your computer now? (y/n)"; if ($choice -eq "y") { Restart-Computer -Force }

Step 3. Wait for the Install

After running the command, your computer will download the update package automatically to the Windows Temp folder, and install the update silently in the background.

When Prompts you to decide whether to restart the computer, choose the one you need between:

• If you enter “y”, the computer will restart immediately.

• If you enter any other character, you can restart your PC manually later. This command prevents Windows from automatically restarting the computer, allowing you to choose when to restart.

Step 4. Check the Upgrade Status

After your computer restarts, you can verify the Windows version by using these two following methods:

• Use the Winver Command:

Press Win + R.

Type winver.

Press Enter.

• Check in Windows Settings:

Press Windows + I.

Select System from the left pane.

Scroll down to the bottom and click About.

Look for the Windows version and OS build information.

If it shows Windows 11 Version 26H2 and OS Build 26300.9278, the upgrade was successful. The installed applications, personal files, and existing cumulative updates should remain available after the enablement package upgrade.