Compressed DLL File .dl_ File Extension

Developer:
Microsoft
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What are dl_ files & how to open them - Compressed DLL File

Developer:
Microsoft

A DL_ file is a DLL file, created by Makecab, that has been compressed. Makecab is a utility for the Windows Operating System that is used to compress a range of files and to create CAB files.
Makecab is used to compress DLL files so that they take up less space on a Windows installation CD.