| File Extension: | OC_ |
| File Type Description: | Compressed ActiveX Control File |
| File Type Developer: | Microsoft Corporation |
| Primary Associated Software: | Microsoft Windows |
| Primary Software Developer: | Microsoft Corporation |
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Compressed ActiveX Control File files were originally developed by Microsoft Corporation for the Microsoft Windows software application. Data from our web servers (annonymous users) show that OC_ files are most popular in United States and are often used by Windows 10. A vast majority of these users are opting to use Google Chrome as their preferred internet browser.
 | Microsoft Windows by Microsoft Corporation |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .PM5 | Adobe Systems Incorporated | Page Layout Files | PageMaker 5.0 Document |
| .PKS | Oracle Corporation | Data Files | Oracle Package Spec File |
| .OLB | Microsoft Corporation | Uncommon Files | OLE Object Library |
| .COV | Microsoft Corporation | Page Layout Files | Fax Cover Page File |
| .WCF | Microsoft Corporation | Data Files | WebEx Saved Chat Session |
| .DAVMOUNT | Microsoft Corporation | System Files | Windows Based Script Host |
| .BCM | Adobe Systems Incorporated | Data Files | Adobe Bridge Cache File |
| .MMC | Microsoft Corporation | Data Files | Microsoft Media Catalog |
| .VHD | Microsoft Corporation | Developer Files | VHDL Source File |
| .MAQ | Microsoft Corporation | Database Files | Microsoft Access Query |
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