Tips to open AC9 file

Can't open the AC9 file? You are not the only one. Thousands of users face similar problems every day. Below you will find tips on how to open AC9 files as well as a list of programs that support AC9 files.

AC9 file extension

File Name SPICE AC/frequence Domain Output
File Developer National Instruments Corporation
File Category Misc Files

The AC9 file is supported on 1 operating systems. Depending on your operating system, you may need different software to handle the AC9 files. Below is a summary of the number of programs that support and open the AC9 file on each system platform.

Operating systems
  • 1
  • 0
  • 0
  • 0
  • 0
  • 0

What is AC9 file?

The file in the AC9 format belongs to the Misc Files category. It was designed by National Instruments Corporation. In addition to this file, the Misc Files category includes 6033 related files. SPICE AC/frequence Domain Output is supported by 1 operating systems. These systems consist of Windows, although it may occasionally be found on another system, it will be non-functional. The main program that supports this format is Spice. This was created by National Instruments Corporation.

How to open AC9 file?

An often recurring problem with SPICE AC/frequence Domain Output is that AC9 is not associated with the correct program file. This causes the file AC9 to open by system applications not designed for this purpose, or to display a message that there is no associated program. This can be quickly resolved by following the instructions below.

The first thing you should do is just "doubleclick" on the AC9 file icon you want to open. If the operating system has an appropriate application to support it and there is also an association between the file and the program, the file should be opened.

Step 1. Install Spice

In this case, you should first verify that the Spice application is installed on the computer. To do this, enter the name Spice into the system search engine. If we do not have this program, it is worth installing it, as it will help you automatically associate the file AC9 with Spice. Later in this article you will find a list of programs that can open AC9 files.

Programs to open AC9 file

Remember to download programs supporting AC9 files only from verified and safe sources. We suggest using the websites of software developers.

Step 2. Create association of Spice with AC9 files

However, it may happen that the application itself does not cause the AC9 file to open in the Spice application, but you can set it manually. This option is available from the level of Properties of a specific file available in the context menu. Information about the file and the program that the file is associated with are available here. Using the "Change" button we can set the program to handle this type. The program should be visible in the window, otherwise it should be selected manually using the "Browse" button and the program installation directory should be indicated. Checking the "Always use the selected program ..." box will permanently associate the AC9 file with the Spice program.

Step 3. Update Spice to the latest version

If, despite the association of the Spice program with the SPICE AC/frequence Domain Output file, the file still does not open, check the program version and possibly update it to the newest version. Some applications allow you to update from the program level, and for others you need to download the installer from the National Instruments Corporation page and install.

Step 4. Check for the following problems with the AC9 file

The problem may also be with the file itself if the above steps don't work. The most common file problems are:

The affected file may be 0 KB or smaller than expected. Usually this applies to AC9 files downloaded from the Internet in case the download did not finish properly. The only repair option is to download the file again.
The computer may have fallen victim to a computer virus or hacker. A quick virus scan using an up-to-date antivirus program should clear up any doubts. If this is not possible, you can use the online scanner. For the best results, we will scan the entire operating system, not just our AC9 file. However, remember that not every infected AC9 file can be recovered, so it is important to take care of regular backups.
This can happen especially when the program is dynamically developed and the structure of the AC9 files changes over time. On their websites, developers usually offer free solutions to such problems, e.g. in the form of a conversion program or an older version of the program.
There can be many reasons for the failure. Repairing is very dependent on the file type. Some programs offer the ability to automatically repair AC9 file corruption. You can restore the file from a backup or use National Instruments Corporation help.
The program indicates that the file is encrypted or corrupted. The encrypted file AC9 except for the special designation, works normally, but only on the device where it was encrypted, before transferring it to another machine, decryption is required.
Some operating systems do not allow file operations in certain locations, eg in system directories or directly on the system drive. The problem is only writing to the file, not reading it. It is best to move AC9 to a different directory.
This problem usually affects more complex files. You may find that another program you are using is preventing you from working with the file. Closing other programs should help. Sometimes it is necessary to wait a while before referencing the AC9 file again. Some anti-virus or backup software may occupy the AC9 file for a certain period of time. If this does not work either, restart the device.