Help! I Can’t Open CTT Files!

There are many reasons why your CTT file might not open on your computer. If you have CTT files that don’t open when you double-click it, ask yourself the following questions...

Do I have the right program?

If you don’t have a program installed on your computer that’s compatible with CTT files, you won’t be able to open one. See if you have one of the most common programs associated with CTT files listed below.

  • MSN Messenger Saved Contact List
  • CAIL Suite Terminal Emulation Data
  • LabVIEW File

What type of file is it?

When you can’t open CTT files, try to figure out the file type. This can help you find the right program to open it. Usually, CTT files are considered Data Files. However, you can look up the file type to be sure. Start by right-clicking the file icon and clicking “Properties” (“More Info” if you’re on a Mac). Then look for the file type under “Type of File” (“Kind” on a Mac).

Can a developer help?

When you can’t open CTT files, a software developer might be able to help. The developers for the programs mentioned above are as follows:

Software Developer
MSN Messenger Saved Contact List MSN
CAIL Suite Terminal Emulation Data CAIL Systems Inc.
LabVIEW File Microsoft Developer

Try contacting one of these developers to find out how you can open your CTT file.


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