It’s time to squirrel away a clean copy of Win10 version 1909
Downloading a clean Win10 version 1909 is remarkably easy, doesn’t take very long (if you have a fast internet connection anyway), and may well save your keister at some point. You can even download it from your phone or iPad.
Don’t worry, it’s 100% legal and, at worst, will occupy about 8GB on a USB drive for a while. Nothin’ to it.
Step 1. If you’re running Win10, use the Media Creation Tool
If you have a license for Windows 10, the easiest way to get version 1909 involves Microsoft’s Media Creation Tool. Go to the Download Windows 10 site and, under "Create Windows 10 installation media," click the link marked "Download tool now."