While searching for an answer to the question - How to open the USER file? - you probably found websites, which offer software that was able to open any file extension. Do not be fooled, there is no one program that will allow you to work with any file extension, including the USER file. Each program contains a different type of data and you need specialized software to properly work with the USER file. Here is a list of programs that are designed to work with the USER file - remember, these applications are able to open at most a few file extensions, they are designed to work with a specific data type.
| File type | Microsoft Visual Studio Project User Options Format |
| Developer | Microsoft |
| Popularity | |
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If after installing the program from a list, you still cannot open a file with the USER extension, the reason may be that the file is damaged. The solution may be to find a new copy of the USER file you want to open
In this case, the easiest way is to use the tool built into the operating system for association of the USER file with applications to support it. Double click on the file you cannot open - the operating system will display a list of programs that are likely to work with your USER file. Choose one of them, or select the location on a disk where you installed one of the applications from our list. Windows should then open the USER file using the program installed earlier.
Entries containing links of the USER file extensions with applications is located in the HKEY_CLASSES_ROOT. If you do not know how to get to the Windows Registry, or how to make changes in it, ask a specialist for help. Lack of knowledge on the subject may cause irreversible changes on your computer.
There may be a situation when a computer virus passes itself off as the USER file. In this case, such a file will definitely not be opened. Download a good antivirus program and scan the USER file mentioned. If the antivirus application detects malicious data, it may signify that the USER file is infected.
| USI | UsiXML UI Description |
| US? | Microsoft Word Font |
| USER | Microsoft Visual Studio Project User Options Format |
| USFLIB | Nintendo 64 Song Library Format |
| USM | USM Game Video Format |
| USG | PC-Doctor For Windows |
| US | English Language Translation |
| USERTILE-MS | Microsoft Windows 8 Release Preview User Tile Format |
| UST | WiFi SiStr Exported User Theme Format |
| USR | FileMaker Pro Runtime Engine Database Application |
