# How to downgrade from win 11 to 10

### 📌 What You’ll Need

* A **USB flash drive** (at least 8GB, everything on it will be erased).
* A PC currently running **Windows 11**.
* Stable internet connection.
* Rufus (portable version).
* Windows 10 Enterprise LTSC 2021 ISO from [<mark style="color:blue;">os.click</mark>](https://os.click/en/Windows:Windows_10:2021_LTSC:19044.1288:Enterprise:en-us:x64).

⚠️ **Warning**: This process will **erase all data** on your PC. Backup important files first.

***

### 1️⃣ Download the Windows 10 LTSC 2021 ISO

1. Go to 👉 [<mark style="color:blue;">os.click/en.</mark>](https://os.click/en/Windows:Windows_10:2021_LTSC:19044.1288:Enterprise:en-us:x64)
2. Search for **Windows 10 Enterprise LTSC 2021**.
3. Choose your preferred language and download the ISO file.
   * File size is usually \~5GB.

***

### 2️⃣ Prepare the USB Drive with Rufus

1. Download and run the latest Rufus.
2. Plug in your USB flash drive.
3. In Rufus:
   * **Device**: Select your USB drive.
   * **Boot selection**: Click *Select* → choose the ISO you downloaded.
   * **Partition scheme**:
     * Choose **GPT** if your PC uses UEFI (most modern PCs).
     * Choose **MBR** if your PC uses Legacy BIOS.
   * **File system**: Leave as **NTFS**.
4. Click **Start**. Rufus will make the USB bootable.
   * This will erase the USB contents.

***

### 3️⃣ Boot From the USB Drive

1. Restart your PC.
2. Press the key for the **Boot Menu** during startup (commonly **F12**, **F9**, **F11**, or **Esc**).
3. Select your USB flash drive to boot from.

***

### 4️⃣ Install Windows 10 LTSC 2021

1. When setup starts, pick your **language, time, and keyboard**.
2. Click **Install Now**.
3. If asked for a product key:
   * You can skip and activate later, or use a valid LTSC 2021 key.
4. Choose **Custom: Install Windows only (advanced)**.
5. Select the drive where Windows 11 is installed.
   * Delete the existing partitions for a clean install.
   * Highlight the unallocated space → click **Next**.
6. The installation will begin. Your PC will restart several times.

***

### 5️⃣ After Installation

* Set up your account and preferences.
* Install drivers and Windows updates.
* Activate Windows using your LTSC 2021 license key.
* Reinstall your apps and restore your files from backup.

***

✅ You’re now running **Windows 10 LTSC 2021** instead of Windows 11.


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