While Microsoft prioritizes the latest versions (like 22H2), you can still obtain the using official and reliable third-party methods. Official Methods for Download
While direct links are often buried, Microsoft maintains a catalog for enterprise and advanced users. If you absolutely must have a clean, official ISO from Microsoft servers, you must use the method or the Microsoft Developer Portal , but there is a specific way to get older builds directly from the source using a browser user-agent switch. windows 20h2 iso download