(e.g., for old software/hardware): Only obtain it from a known, reputable archival source like the Internet Archive ( archive.org ) with a verified SHA-1 checksum matching an original MSDN ISO.
"OEM" in a pirated release usually implies a crack, KMS emulator, or modified slshim – all of which are flagged as malware by most antivirus engines (and are illegal). Windows 10 X64 19H1 10in1 OEM ESD en-US JULY 20...