since 2000
Opening a ??_ File
The ??_ file type is primarily associated with InstallShield.
What is a ??_ file?
??_ files mostly belong to InstallShield by Acresso Software Inc. Use our "Online ??_ Text Viewer" below to analyze your ??_ file and to see all text it contains.
How can I open a ??_ file?
You need a suitable software like InstallShield to open a ??_ 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 ??_ file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a ??_ file directly in the browser:. Just drag the file onto this browser window and drop it.
Online ??_ Text Viewer
or drag and drop it here
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Programs that open and convert ??_ files:
- InstallShield by Acresso Software Inc.
See the previous paragraphs to learn more about the main application. ??_ files are often referred to as InstallShield archives because this type of file is primarily created or used by this software.
- Microsoft KWAJ compressed (Phil Katz's 'deflate')Compression format(s) used by some Windows and MS-DOS install programs. MS-DOS includes expand.exe to uncompress its install files. The compressed files are created with a matching compress.exe command. The identifying characters used for this association are - Hex: 4B 57 41 4A 88 F0 27 D1 03 00, ASCII: KWAJˆð'Ñ . This file format is classified as Archive.
- Microsoft SZDD compressed (Haruhiko Okumura's LZSS)Compression format(s) used by some Windows and MS-DOS install programs. MS-DOS includes expand.exe to uncompress its install files. The compressed files are created with a matching compress.exe command. The identifying characters used for this association are - Hex: 53 5A 44 44 88 F0 27 33 41 00, ASCII: SZDDˆð'3A . This file format is classified as Archive.
Technical Data for ??_ File Extension
File classification:
Archive
Identifier:
Hex: 2A AB 79 D8 00 01 00 00 43 6F 70 79 72 69 67 68 74 20 28 63 29 20 31 39 39 30 2D 31 39 39 35 20 53 74 69 72 6C 69 6E 67 20 54 65 63 68 6E 6F 6C 6F 67 69 65 73 2C 20 49 6E 63 2E 20 41 6C 6C 20 52 69 67 68 74 73 20 52 65 73 65 72 76 65, ASCII: *«yØ Copyright (c) 1990-1995 Stirling Technologies, Inc. All Rights Reserve (provided by TrID database)
a ??_ Compressed File is a special file format by Acresso Software Inc. and should only be edited and saved with the appropriate software.
How to solve problems with ??_ files
- Associate the ??_ file extension with the correct application.
- Update your software that should actually open compressed files. Because only the current version supports the latest ??_ file format. Search, therefore, e.g. on the Acresso Software Inc. manufacturer website after an available InstallShield update.
- To make sure that your ??_ file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
- Click here to open your .??_ file online - secure, fast, and no downloads needed.