You"re here because you have a file that has a file extension ending in .asf. Files with the file extension .asf can only be launched by certain applications. It"s possible that .asf files are data files rather than documents or media , which means they"re not meant to be viewed at all.
An advanced streaming format file is used by the software to implement support for digital audio and video files that have been processed and implemented with support for online and network streaming. These advanced streaming format files are integrated with digital audio or video compression specifications that are used to improve the latency and quality of digital audio and video content for streaming purposes. The content of an advanced streaming format file is implemented with data encoding standards that are used to store its media content in the ASF file format and to append the file with the .asf extension. Some digital media players and other types of applications have built-in support for these advanced streaming format files.
Launch a .asf file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that"s meant to open your .asf file will open it. It"s possible you may need to download or purchase the correct application. It"s also possible that you have the correct application on your PC, but .asf files aren"t yet associated with it. In this case, when you try to open a .asf file, you can tell Windows which application is the correct one for that file. From then on, opening a .asf file will open the correct application.
Microsoft Windows Media Player
Be careful not to rename the extension on .asf files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.
A file extension is the set of three or four characters at the end of a filename; in this case, .asf. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.
Are you having trouble opening .ASF files? We collect information about file formats and can explain what ASF files are. Additionally, we recommend programs that are most suitable for opening or converting such files.
Extension .asf refers to the "Advanced Systems Format", also known as the "Advanced Streaming Format", (ASF) and its associated file type ( .asf). ASF is a closed container format developed by Microsoft (MS) for its Windows Media multimedia software system. The ASF format is suitable for local content in the form of files and streaming media, and also allows for the recording of rich metadata within files .asf(similar to ID3 tags).
File .asf is a container file in ASF format containing digital audio/video data. Such a container may contain audio and/or video tracks encoded using various codecs.
Although ASF does not impose any restrictions on the use of any codecs for tracks inside containers .asf, this format is still primarily used in conjunction with Windows Media codecs. ASF media files can have different extensions/file types (.wma for "Windows Media Audio" and .wmv for "Windows Media Video"), the same extension .asf traditionally assigned to files that use third-party (non-Microsoft) codecs.
ASF files can be opened/played using any media player that supports Windows Media (and other codecs that may have been used to encode audio/video tracks within a specific container file .asf).
Microsoft Word is the most widely used word processor in the world. Every person who had even the slightest connection to a computer used standard Office programs, including a text editor. A convenient and simple interface, accessible and understandable functions make Office indispensable for working with text files. Everyone knows that the .doc and .docx extensions are standard indicators of text documents. However, when looking at the ASD format, not every consumer will be able to answer what type it is, or say that it is a Word format.
What is a file with the ASD extension and how to open it.
Almost every computer user sooner or later faces the need to open a file in the ASD format. And this is not surprising, since the ASD file extension is an insurance or backup document that is automatically saved in the system if Microsoft Word shuts down incorrectly. Let's take a closer look at how you can restore incorrectly saved ASD files, where they are stored by default, and tell you about the features of restoring and opening texts.
Not all computer users know that when installing the automatic saving function, in case of unforeseen situations, such as a power failure, technical problems with the computer, or incorrect shutdown due to consumer carelessness, the latest version of the Word document is saved in the system using special utility programs. The saved texts are in ASD format.
Sometimes there are cases when the recipient receives a document in a similar format by email. The most interesting thing in this situation is that the sender could initially send an archive of the correct encryption. Such format conversion can also occur due to system errors or incorrect submission of material. Nobody knows for sure why such situations occur, except, probably, software developers, however, there is a problem, which means we need to look for ways to solve it.
ATTENTION. Automatically Microsoft Word, regardless of its year of release, 2007 or 2010, automatically saves the text the user is working with every ten minutes. The backup copy is deleted automatically by the system after the user has completed the work correctly and saved the work material.
Sometimes, when you turn on the computer again and try to open an incorrectly closed file, the system itself offers to restore the latest version of the text, and then there is no need to search for it. However, this does not always happen. If Word 2007 or 2010 does not offer automatic recovery, and the information is important for the consumer, a lot of effort and time was spent on writing it, then you need to find and restore the archive yourself.
You can find it on your computer in directory C. To search, go to Documents and Settings/User/Application Data/Microsoft Word.asd. Sometimes the text may be located in some other folder in the system, therefore, if there is a need to restore a Microsoft Word 2007 document after an incorrect shutdown, and the user cannot find it, for this purpose, you can enter the query *.asd in a search engine and press Enter. The system itself will search, display all materials with this extension and show in which folder they are stored. Among the files found will be the text the consumer is looking for.
However, you should not rush to rejoice, since it is impossible to open it using the standard method. When a standard attempt is made to open text with an asd extension, using the standard offered Word programs, there is a high probability that the user will receive a message on the screen “Word error when opening the file. Try the following steps..."
The found text cannot be opened in the standard way; it cannot be edited or re-save. It is also not possible to change the format to the standard .doc or .docx extension.
In order to open the recovered material, you will need to open any document in Word format, select the Office menu or file, depending on the Office, in the upper left corner of the screen. 
After this, you must select the “Open” option from the list. At the bottom of the window, in the “File name” column, you need to indicate the path to the required document. We emphasize that you only need to indicate the path, not its name. After this, in the “File type” line, the drop-down list should display all available texts with a similar extension that are located inside the backup folder. You need to select the name of the text that interests the consumer and click the “Open” button.
After such procedures, the text of interest opens without problems, the user can save it again in the required format, edit and work with it as usual.
Most often, after such a one-time procedure, in the future, if non-standard situations arise with saving in a backup format, reopening is not accompanied by such difficulties. As practice shows, then materials with the asd extension are opened as regular documents. However, even if a similar situation arises again, the consumer already knows how to deal with it, how to solve the problem that has arisen.
Using the recommendations described above, now the consumer will not only be able to open a document with the asd extension, but will also be aware of how to restore the file and where to find it if, due to an unforeseen situation, the Microsoft document was not saved.
Qualitatively study the special features of installed programs on your personal computer, and your work will become much easier. The user's knowledge and skills will help to avoid many problems and unpleasant situations with software.
The most common problem that prevents users from opening this file is an incorrectly assigned program.
To fix this in Windows OS, you need to right-click on the file, in the context menu, hover the mouse over the “Open with” item, and select “Select a program...” from the drop-down menu. As a result, you will see a list of installed programs on your computer, and you can select the appropriate one. We also recommend checking the box next to "Use this application for all ASF files."
