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Walterttor's avatar
Walterttor
Iron Contributor
Nov 06, 2025

My PC doesn't have TPM 2.0. How can I force install windows 11?

My Dell desktop PC runs Windows 10. When I downloaded the Windows 11 ISO and start the in-place upgrade, the Windows 11 setup program tell me: The PC must support TPM 2.0 TMP not detected Then I...
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Eliasyuer's avatar
Eliasyuer
Iron Contributor
Nov 06, 2025

This is a manual, offline, and 100% safe method that works on nearly all older PCs that lack TPM 2.0 or use unsupported CPUs. You’ll create a modified Windows 11 setup using files from Windows 10 to remove the hardware checks.

🧰 What You Need

  1. A Windows 11 ISO file (you can get it from Microsoft’s official site).
  2. A Windows 10 ISO file (for extracting one key file).
  3. Around 8 GB free space on your PC.

Force Install Windows 11 If The PC Does not Have TPM 2.0

Step 1: Right-click the Windows 11 ISO → Mount (or extract it with 7-Zip). Copy all files from the mounted ISO to a folder, e.g.

Step 2:  Right-click the Windows 10 ISO → Mount. Navigate to the sources folder.

Step 3: Find and copy this file:

appraiserres.dll

Step 4: Go to your C:\Win11_Install\sources folder. Find and delete the existing appraiserres.dll file. Paste the appraiserres.dll you copied from the Windows 10 ISO.

This file disables TPM, CPU, and Secure Boot checks during setup.

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