Download and Install the Update through Windows Update Manually
Following these steps:
1. Type settings in the search box at the bottom left corner of the desktop, then a menu with the search results will pop up. Click Settings in the menu.
2. Click Update & security.
3. Click Check for updates.
Then the download for all updates will start. As you can see, the Anniversary Update version is 1607.
4. After update is completed, click Restart Now to restart your PC.
Note: To get Anniversary Update through Windows Update, you need to have Windows 10 for at least 30 days.
If you just upgraded to Windows 10 and have it less than 30 days, but want to get Anniversary Update right now, you can download it from Microsoft official website.
Download Windows 10 Anniversary Update from Microsoft
Microsoft has released Windows 10 Anniversary Update on their website. Follow steps below to download the update from them.
1. Click here to go to the download page.
2. Click on Get the Anniversary Update now then the download will start.
The downloaded file is an executable file (.exe). Just double-click on it and follow the on-screen instructions to install the update. After install completes, you will be asked to restart your PC. Restart it for the changes to take effect.