All about OSS Files

The OSS file type is primarily associated with Microsoft Outlook.

OSSFile Extension OSS
File extension: OSS
File type:  data file

What is an OSS file?

OSS files mostly belong to Microsoft Outlook. Your OSS file can be one of two specialized data files.:
  • Outlook Item Storage File: This file uses a Microsoft Compound format to store email items, calendar entries, and contacts. It is managed by Microsoft Outlook and serves as a local backup of your messaging data.
  • Optical Surface Scan File: This file holds scan data from optical surface measurements. It is used in specialized projects and is associated with OpenSees. For more details, visit OpenSees.
  • FilExt.com note: The same OSS extension is used for both uses. Open these files with the appropriate software to view and manage their contents.

    How to open OSS files

    You need a suitable software like Microsoft Outlook to open an OSS file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your OSS file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a OSS file directly in the browser:. Just drag the file onto this browser window and drop it.

    Online OSS File Viewer

    Choose your .oss file to play

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    How to extract texts from OSS files or capture a screenshot to PDF, JPG, DOCX, TXT, ...

    You can extract texts from OSS file or capture a preview screenshot using our online OSS file viewer:
    1. To do so, click the "Choose your .oss file to play" button above.
    2. Your OSS file will then be displayed in the browser.
    3. Now click on "Save as..." at the top of the page.
    4. Then choose the file format (e.g. JPG, PDF, DOCX, TXT, ...) you want.
    5. Your file will be converted and downloaded.

    Programs that open and convert OSS files:

    1. Microsoft Outlook
      See the previous paragraphs to learn more about the main application. OSS files are often referred to as Microsoft Outlook data files because this type of file is primarily created or used by this software.
    2. Office Saved Search by Microsoft Corporation

    Technical Data for OSS File Extension

    File classification:
    Data
    Related files:

    The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

    ProgramID: ossfile, FileType: Office Search, AppName: Microsoft Outlook Item Finder
    EXEFile: FINDER.EXE

    ProgramID: ossfile, FileType: Office Search, AppName: Outlook Item Finder
    EXEFile: FINDER.EXE

    ProgramID: ossfile
    EXEFile: %ProgramFiles%\Microsoft Office 2003\OFFICE11\FINDER.EXE /f %1

    ProgramID: ossfile
    EXEFile: %ProgramFiles%\Microsoft Office\Office10\FINDER.EXE /f %1

    ProgramID: ossfile
    EXEFile: %ProgramFiles%\Microsoft Office\OFFICE11\FINDER.EXE /f %1

    ProgramID: ossfile
    EXEFile: %ProgramFiles%\Microsoft Office\Office\finder.exe /f %1

    ProgramID: ossfile
    EXEFile: %ProgramFiles%\Microsoft Office_XP\Office10\FINDER.EXE /f %1

    ProgramID: ossfile
    EXEFile: %ProgramFiles%\Microsoft Outlook\OFFICE11\FINDER.EXE /f %1

    ProgramID: ossfile
    EXEFile: %ProgramFiles%\OfficeXP\Office10\FINDER.EXE /f %1

    ProgramID: ossfile
    EXEFile: W:\OfficeXP\FILES\PFILES\MSOFFICE\OFFICE10\FINDER.EXE /f %1

    ProgramID: ossfile
    EXEFile: %ProgramFiles%\FTP Software\OnNet Host Suite\opnscrpt.exe %1

    ProgramID: ossfile
    EXEFile: %ProgramFiles%\Microsoft Office 2007\Office12\OUTLOOK.EXE /finder


    an oss data file is a special file format and should only be edited and saved with the appropriate software.

    How to solve problems with OSS files

    • Associate the OSS file extension with the correct application.
    • Update your software that should actually open data files. Because only the current version supports the latest OSS file format. Search, therefore, e.g. on the manufacturer website after an available Microsoft Outlook update.
    • To make sure that your OSS file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
    • Click here to open your .OSS file online - secure, fast, and no downloads needed.
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