File Extension Library

.OCA File Extension

  • Developer by: Microsoft
  • Category: Developer Files

What are .OCA files and how to open them?

Can't open .OCA file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .OCA file.

What is a .OCA file extension?

.OCA file extension is created by Microsoft. .OCA has been classified as Developer Files.

.OCA is Custom Control Library Type File

Accompanying file saved with Visual Basic custom control (.OCX) files; contains standard descriptions of objects, properties, and methods used by OLE Automation; created automatically by Visual Basic and given the same name as the custom control except for the file extension.

OCA files are binary files that serve as both extended type libraries and a cache for OCX files. If an OCA file is deleted, it can be rebuilt by Visual Basic, but will take extra time.

List of all softwares that can open the Custom Control Library Type File
Microsoft Visual Studio

How to fix problems with .OCA files

  1. You need to update the application that you normally use to open .OCA files. Only the latest version of the software supports the current .OCA file format
  2. You need to check the .OCA file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)