Tips to open TOB file

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

TOB file extension

File Name ZEMAX Object Data
File Developer ZEMAX Development Corporation
File Category Misc Files

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

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

What is TOB file?

The TOB file has been categorized as Misc Files. It was designed by ZEMAX Development Corporation. Misc Files consists of 6033 similar files. ZEMAX Object Data is supported by 1 operating systems. The file will work on Windows systems, unfortunately not on others. The main program that supports this format is ZEMAX. This was created by ZEMAX Development Corporation.

How to open TOB file?

The most common problem when using ZEMAX Object Data is that a specific TOB is not associated with the program. Thus, when you open TOB, the program selection wizard or some other program starts. How to solve such a problem?

The first thing you should do is just "doubleclick" on the TOB 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 ZEMAX

In this case, you should first verify that the ZEMAX application is installed on the computer. This can be achieved by typing ZEMAX into the operating system search engine. If it is not, installation may solve the problem, as most applications create file associations during installation. Below is a list of programs that support the file TOB.

Programs to open TOB file

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

Step 2. Create association of ZEMAX with TOB files

If, despite the installed application, the TOB file does not start in the ZEMAX 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 window will show, among other things, the type of the file and the information by which the program is used to launch the file. Changes can be made using the "Change" button. If there is no software on the list, simply select "Browse" and manually select the directory where the application is installed. Checking the "Always use the selected program ..." box will permanently associate the TOB file with the ZEMAX program.

Step 3. Update ZEMAX to the latest version

If, despite the association of the ZEMAX program with the ZEMAX Object Data 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 ZEMAX Development Corporation page and install.

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

Of course, it may happen that despite the above steps, the file still does not work. The most common file problems are:

The affected file may be 0 KB or smaller than expected. This suggests truncating the TOB file contents when downloading or copying. The only repair option is to download the file again.
The most common cause here is computer viruses. 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. The scan should cover the entire computer, not only the TOB file that we want to open. As a result of the scan, sometimes it is not possible to recover TOB files, which are deleted if there is a backup of this file, then after restoring it, it must also be scanned.
A typical compatibility error - the program does not support the older version of the TOB file. These problems are known and are often very easy to fix using the software developers's website.
There can be many reasons for the failure. Depending on the type of file, it is necessary to repair it accordingly. Sometimes the program itself has options to repair the most popular TOB file corruption. The easiest way is to restore the file from a backup, if there is one, or contact ZEMAX Development Corporation
When reading, a message appears that the file was encrypted or corrupted. The encrypted TOB files cannot be played on other computers than the one on which they were encrypted, they must be decrypted before using on another device.
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. If possible, you can try to move the TOB file to another location.
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. Closing other programs should help. Sometimes you have to wait for the session to the file TOB to close. Some anti-virus or backup software may occupy the TOB file for a certain period of time. If this does not work either, restart the device.