| File Extension: | SIG |
| File Type Description: | Signature File |
| File Type Developer: | Unknown Developer |
| Primary Associated Software: | Microsoft Outlook Express |
| Primary Software Developer: | Microsoft Corporation |
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Signature File files were originally developed by Microsoft Corporation for the Microsoft Outlook software application. Our data shows that SIG files are frequently utilized by PC users in United States and popular on the Windows 10 platform. A high percentage of these users browse the web using Google Chrome.
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
 | Mac |
 | iOS |
 | Android |
 | Windows Phone |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .RC_ | Microsoft Corporation | Data Files | Microsoft WinHelp Compressed Help Document |
| .HTR | Microsoft Corporation | Developer Files | Microsoft Windows NT Password Services Script |
| .ZUP | Microsoft Corporation | System Files | Microsoft Business Solutions Navision Configuration |
| .GRV | Microsoft Corporation | Data Files | Office Groove File |
| .OFC | Microsoft Corporation | Data Files | Open Financial Connectivity File |
| .CPN | Microsoft Corporation | Game Files | Age Of Mythology Campaign File |
| .PFX | Various Developers | System Files | PKCS #12 Certificate File |
| .CLB | Microsoft Corporation | System Files | COM+ Catalog File |
| .IDENTIFIER | Microsoft Corporation | System Files | Windows Zone Identifier File |
| ._SLN100 | Microsoft Corporation | Data Files | Microsoft Visual Studio File |
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