The File Extensions Database

.OLB File Extension

  • Developer by: Microsoft
  • Category: Misc Files
  • Format: Binary

What is an .OLB file?

.OLB is OLE Object Library

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.

Programs that open OLE Object Library
Microsoft Word 2016
Microsoft Excel 2016
Microsoft PowerPoint 2016
Microsoft Project 2016
Microsoft Visual FoxPro
Microsoft Visual Studio 2017
File Type 2 OrCAD Symbol Library File
Developer by: Cadence Design Systems Category: CAD Files Format: Binary

CAD file used by OrCAD, a program used for designing printed circuit boards (PCBs); saves "symbols," which are the electric circuit components that can be put together to construct a PCB design; often used as a library for defining virtual circuit components that match the specifications of real-world circuit components.

OLB files are often included as part of an OrCAD project (.OPJ file).

Programs that open OrCAD Symbol Library File
Cadence OrCAD PCB Designer

How to solve problems with OLB files

  • Associate the OLB file extension with the correct application. On :
    Windows: Right click on any OLB file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.OLB files". Mac: Right click (or Ctrl-click) the OLB file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .OLB is OLE Object Library. Because only the current version supports the latest OLB file format. Search, therefore, e.g. on the Microsoft manufacturer website after an available .OLB is OLE Object Library update.
  • To make sure that your OLB file is not corrupted or virus-infected, get the file again and scan it with antivirus software.