Tips to open TAC file

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

TAC file extension

File Name ActiCalc Data Format
File Developer ActiCalc
File Category Data Files

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

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

What is TAC file?

The file in the TAC format belongs to the Data Files category. It was designed by ActiCalc. In addition to this file, the Data Files category includes 1326 related files. ActiCalc Data Format appears on 1 operating systems as a functional file. Although it can be found with greater or lesser success on any operating system, it will only be useful on Windows.

How to open TAC file?

An often recurring problem with ActiCalc Data Format is that TAC is not associated with the correct program file. This is manifested by the fact that TAC files open in unusual applications or do not have an assigned program. This can be quickly resolved by following the instructions below.

The first thing you should do is just "doubleclick" on the TAC 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 ActiCalc

The first step is to check if the computer has the ActiCalc program installed. This can be achieved by typing ActiCalc into the operating system search engine. In the absence of an appropriate program, its installation in the vast majority of cases will fix the problem. Below you will find a list of applications that support TAC files.

Programs to open TAC file

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

ActiCalc
ActiCalc
Step 2. Create association of ActiCalc with TAC files

If, despite the installed application, the TAC file does not start in the ActiCalc application, you must create a file association. It is most convenient to call the context menu with the right mouse button and select Properties. The displayed window will contain information about the program that supports this type of file. 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. The "always use the selected program ..." field will set the ActiCalc application as the default for handling the TAC file.

Step 3. Update ActiCalc to the latest version

If, despite the association of the ActiCalc program with the ActiCalc Data Format file, the file still does not open, check the program version and possibly update it to the newest version.

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

If the above steps do not help, you can assume that the file itself is not correct. This could be due to the file itself, the cleanest issues are:

The affected file may be 0 KB or smaller than expected. This suggests truncating the TAC file contents when downloading or copying. The only repair option is to download the file again.
The operating system may be infected with a computer virus. A virus scan using an up-to-date antivirus program should fix the problem. 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 TAC file. Sometimes virus-infected TAC files cannot be recovered, so make a backup in advance.
A typical compatibility error - the program does not support the older version of the TAC file. 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. The repair method must be adapted to the type of file and damage. Some programs offer the option of recovering data from damaged TAC files.
When reading, a message appears that the file was encrypted or corrupted. The encrypted TAC files can be used by the device on which they were encrypted, on any other device it is required to have the appropriate cryptographic key and decrypt the file before its recovery.
Some of the system directories are excluded from modification. While there is usually no problem reading such a file, it may not be possible to save it. Copying the TAC file to another location will fix the problem.
This can happen on a file that does not support multiple access. Some file types can only be opened in one program at a time. Just close unnecessary programs. Sometimes you have to wait for the session to the file TAC to close. However, some background programs may block the TAC file while scanning. If the problem persists, restart the machine.