If you have this file, you likely downloaded it from a Volume Licensing Service Center (VLSC), an MSDN subscription, or an internal corporate repository. Let’s dissect the name:
| Segment | Meaning | | :--- | :--- | | sw_ | Software – Standard prefix for Microsoft software packages. | | dvd5_ | DVD-5 – The image is sized to fit on a single-layer, 4.7GB DVD. (Office 2013 Pro Plus fits in ~800MB, but this denotes legacy media packaging). | | office_professional_plus_2013_ | Product & Edition – Full suite: Word, Excel, PowerPoint, Outlook, OneNote, Publisher, Access, and Lync/Skype for Business components. | | w32_ | Windows 32-bit – Designed for x86 systems (will install on 64-bit Windows as well, via WOW64 emulation). | | english_ | Language – UI, Help, and Proofing tools are US English. | | mlf_ | Multiple Language Fallback – Indicates this is a Volume License (VL) ISO with multi-language resource handling. | | x18-55138 | Part number / Build identifier – Specific to Office 2013 Professional Plus VL (build 15.0.4420.1017, SP1 slipstreamed in later versions of this code). | | .iso | Disc image – Can be mounted or burned to install media. | If you have this file, you likely downloaded
Key Takeaway: This is the Volume License (VL) version of Office 2013 Professional Plus for 32-bit Windows, in English. It is designed for large organizations using KMS (Key Management Service) or MAK (Multiple Activation Key) activation. Run installer:
This is the most misunderstood part. The mlf_x18-55138 identifier confirms this is a Volume License (VL) product. It does not accept a retail key (the kind you buy from Amazon or a physical store). Activation:
This was originally distributed to Volume License (VL) customers (businesses, schools, government) via the Microsoft Volume Licensing Service Center (VLSC).