AS4 file format description

Many people often share .as4 files without providing instructions on how to use them. This can make it difficult for users to determine which program is compatible for editing, converting, or printing .as4 files. To address this issue, we have created this page to offer assistance and guidance on handling .as4 files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .as4 files.

Our aim is to simplify the process and promote seamless use of the .as4 file format.

4 filename extension(s) found in our database.

.as4 - AskSam Database Backup

The AS4 data files are related to AskSam. The AS4 file is an AskSam Database Backup. AskSam is a flexible and powerful way to organize information and create searchable databases from Web pages, Email, PDF files, texts, and Word documents. The AskSam seems to be no longer supported.

Category:Data files
Magic:- / -

AskSam Database Backup related extensions:

  • ask AskSam Database

.as4 - Clone Manager Scan Results Data

The AS4 data files are related to Clone Manager. The AS4 file is a Clone Manager Scan Results Data. Clone Manager is a commercial bioinformatics software work suite of Sci-Ed.

Application:Clone Manager
Category:Data files
Magic:- / -

Clone Manager Scan Results Data related extensions:

  • bnskin BeatNik Clock Skin
  • vmn Markush DARC File
  • vu XtalView VU Object
  • roo Oracle CODASYL DBMS Database Root
  • def ESwin Wizard
  • stp MotionTracking Statistic Filters and Masking Parameters Data

.as4 - IBM AS/400 Client Access Data

The AS4 data files are related to IBM AS/400. The AS4 file is an IBM AS/400 Client Access Data. IBM AS/400 is a mid-range server designed for small businesses and departments in large enterprises.

Application:IBM AS/400
Category:Data files
Magic:- / -

IBM AS/400 Client Access Data related extensions:

  • gxf Grid Exchange Format File
  • idm iData Mobile Data
  • tvo Teveo Live Data
  • fabpfpkg DVDFab Profile Package
  • cfx Movie Edit Pro FX Data
  • ies IESNA Photometric Data

.srf - SurfSaver Data

The SRF data files are related to SurfSaver. The SRF file is a SurfSaver Data. SurfSaver is a browser add-on, which lets you store Web pages directly from your browser into searchable folders. The SurfSaver seems to be no longer supported.

Category:Data files
Magic:- / -

SurfSaver Data related extensions:

  • srf SurfSaver Data

Be careful.

It is important to understand that the .as4 file extension is not limited to a particular set of applications. Other programs besides the intended ones can also use the .as4 extension to create files. This includes potentially harmful programs or malware that may generate .as4 files for various purposes. Be especially cautious with .as4 files coming from untrusted or unknown sources.

Can't open a .as4 file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize an extension, you receive the following message:

Select an app to open this .as4 file

To set the .as4 file association in Windows 11, you can follow these steps

  1. Open the Settings app by clicking on the Start menu and selecting the gear icon.
  2. In the Settings app, click on System and then select Apps from the left-hand side menu.
  3. Scroll down and click on the Default apps option.
  4. Under the Default apps section, you will find various categories such as Email, Web browser, and Music player.
  5. Locate the category that matches the file type you want to associate, such as Photos for image files or Video player for video files.
  6. Click on the current default app listed under the category. A list of available apps will appear.
  7. Choose the app you want to set as the default for that file type. If the desired app is not listed, click on More apps to see additional options or click on Look for an app in the Microsoft Store to search for apps in the Store.
  8. After selecting the app, it will become the default choice for opening files of that type.

It's worth mentioning that you don't always need to set .as4 file association. Many applications can open .as4 files without requiring any specific file association to be set.

The .as4 file extension is often given incorrectly

Based on searches conducted on our site in the past year, we have compiled a list of the most common misspellings. These frequent misspellings can cause confusion and hinder search accuracy. Our goal in providing this list is to help users find the right information more easily and enhance their overall search experience on our website.

These misspellings were the most common in the past year:

ac4, as, ase, asr, ast, ax4, qs4, sa4, ws4, xs4, zs4

Is it possible that the filename extension is misspelled?

There is a possibility that the .as4 filename extension is misspelled. To assist users in identifying potential errors, we provide a list of similar file extensions in our database.

Filename extensions similar to .as4:

Operating systems

At, we strive to provide a seamless user experience by ensuring compatibility with a wide range of operating systems. The following is a comprehensive list of the operating systems currently supported by

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

Verified by

The verification conducted by the team ensures that the information presented is accurate, reliable, and thoroughly researched. Users can rely on as a trusted source of information, knowing that their team's dedication to verification and quality control provides a dependable resource for staying informed. is not liable for the content and accuracy of external links, even if we exercise careful control over them.

If you find the information on this .as4 page useful, please feel free to link to this page. >> AS4 file