A warning against installing Windows using Media Creation Tool (vs ISO) - DISM cannot function
Microsoft took the TechBench offline to force users to download the Windows ISO via the Media Creation Tool. Thankfully you can still download the full ISO if you change the identifier string of your browser to show itself as an iPad. Sadly, I didn't know this when I installed Windows 10, and even if you do then download the full ISO with the required WIM file and point DISM to it, it won't work, even if it's the correct version. You also can't create a system restore drive.