Tips to open CU_ file

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

CU_ file extension

File Name Microsoft Windows Winhelp Compressed
File Developer Microsoft Corporation
File Category Archive Files

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

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

What is CU_ file?

The file with the extension CU_ is the Archive Files file type. The creator of this file is Microsoft Corporation. Additionally, the Archive Files category contains 619 of other files. Microsoft Windows Winhelp Compressed appears on 1 operating systems as a functional file. The file will work on Windows systems, unfortunately not on others. It is recommended to use Microsoft Windows to handle this file. This is a program created by Microsoft Corporation.

How to open CU_ file?

An often recurring problem with Microsoft Windows Winhelp Compressed is that CU_ is not associated with the correct program file. Thus, when you open CU_, the program selection wizard or some other program starts. This can be quickly resolved by following the instructions below.

The first thing you should do is just "doubleclick" on the CU_ 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 Microsoft Windows

In this case, you should first verify that the Microsoft Windows application is installed on the computer. The easiest method is to use the system search engine by entering the program name Microsoft Windows in it. If we do not have this program, it is worth installing it, as it will help you automatically associate the file CU_ with Microsoft Windows. Later in this article you will find a list of programs that can open CU_ files.

Programs to open CU_ file

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

Step 2. Create association of Microsoft Windows with CU_ files

If the application is or has been freshly installed, but the CU_ file still does not use the Microsoft Windows program, it means no association. This option is available from the level of Properties of a specific file available in the context menu. The displayed window will contain information about the program that supports this type of file. Changes can be made using the "Change" button. It may happen that in the next window there will be no appropriate program - however, this can be corrected with the "Browse" option where you should manually indicate the program location. The "always use the selected program ..." field will set the Microsoft Windows application as the default for handling the CU_ file.

Step 3. Update Microsoft Windows to the latest version

If, however, after binding Microsoft Windows with Microsoft Windows Winhelp Compressed there were still problems, you should update the program to the latest version. In this case, use the Microsoft Corporation website or update the program from the application.

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

The problem may also be with the file itself if the above steps don't work. This could be due to the file itself, the cleanest issues are:

Very often, the file may be size 0 or incomplete. Usually this applies to CU_ 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 virus scan using an up-to-date antivirus program should fix the problem. Alternatively, you can use the scanners available online. The scan should cover the entire computer, not only the CU_ file that we want to open. Sometimes virus-infected CU_ files cannot be recovered, so make a backup in advance.
This can happen especially when the program is dynamically developed and the structure of the CU_ files changes over time. Help should be sought from the software developer, as they usually recommend using free file converters or installing 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 CU_ files. The easiest way to restore the file is from a backup or by contacting Microsoft Corporation, but this one can be expensive. Not all damage can be reversed.
When reading, a message appears that the file was encrypted or corrupted. The encrypted file CU_ 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.
The operating system protects files in some locations (e.g. the root of the system partition) against unauthorized access. While there is usually no problem reading such a file, it may not be possible to save it. If possible, you can try to move the CU_ file to another location.
This can happen on a file that does not support multiple access. 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 CU_ file again. However, some background programs may block the CU_ file while scanning. If the problem persists, restart the machine.