File Type Generic IconOLE Object Library
File Format Proprietary (Microsoft)
Usage Referenced by an application; not meant to be opened manually
Rank ★ ★ ☆  Average

Object library that contains data types and constants referenced by MS Office components; may cause certain Microsoft programs to not function correctly if moved or renamed.

OLB files are also referred to as Office Object Library files.

Open With

IconMicrosoft Word for Windows

IconMicrosoft Excel for Windows

IconMicrosoft PowerPoint for Windows

Updated 2007