The long string of characters isn't just gibberish; it tells the story of exactly what you’re installing:
. It marks this as one of the later refreshes, often associated with versions distributed via MSDN (Microsoft Developer Network) or through the "Digital River" servers that hosted official downloads for years. : This indicates the file uses Electronic Software Delivery win7-ult-sp1-x64-u-24535-esd.iso
This article provides an overview of the file, a specific distribution of Windows 7 Ultimate. File Overview The long string of characters isn't just gibberish;
: High-performance connectivity for corporate networks without a VPN. Installation & Availability win7-ult-sp1-x64-u-24535-esd.iso
Full access to BitLocker drive encryption, AppLocker, and 35 different language packs. Minimum System Requirements
win7-ult-sp1-x64-u-24535-esd.iso is . Microsoft never released Windows 7 as an ESD in ISO format to the public. Therefore: