IT departments without internet access (secure facilities) need a complete, slipstreamed installation source that includes patches up to January 2020.
Windows Server 2008 R2 Service Pack 1 (SP1) is a cumulative update set for the 64-bit (x64) edition of Windows Server 2008 R2. The “ESD EN-US Jan 20 Full” phrasing indicates an English (United States) full Electronic Software Download build released or packaged on January 20th — a complete installer image rather than an incremental patch. windows server 2008 r2 sp1 x64 esd enus jan 20 full
If you have the ESD file and need a bootable installation medium, follow these steps (Windows 10/11 or Windows Server 2016+ required for modern DISM): Note: ESD files may be compressed and require
Typical full ESD for Windows Server 2008 R2 SP1 x64 en-US includes: windows server 2008 r2 sp1 x64 esd enus jan 20 full
Note: ESD files may be compressed and require the Microsoft-provided tools or third‑party utilities to convert to ISO or to extract the install.wim.
The "x64" indicates that this software is designed to run on 64-bit processors.
If you need that file, use it strictly to run the Windows Server Migration Tools or ADMT (Active Directory Migration Tool) .