UST File Extension

UST file icon
WiFi SiStr Exported User Theme Format

What is UST file?

UST is a file extension commonly associated with WiFi SiStr Exported User Theme Format files. WiFi SiStr Exported User Theme Format specification was created by DNsoft. UST file format is compatible with software that can be installed on Windows system platform. UST file format, along with 1113 other file formats, belongs to the Settings Files category. WiFi Sistr is by far the most used program for working with UST files. On the official website of DNsoft developer not only will you find detailed information about theWiFi Sistr software, but also about UST and other supported file formats.

Programs which support UST file extension

Programs that can handle UST files are as follows. Files with UST suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

Programs that support UST file

Windows Windows

How to open file with UST extension?

Being unable to open files with UST extension can be have various origins. Fortunately, most common problems with UST files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. We have prepared a listing of which will help you resolve your problems with UST files.

Step 1. Install WiFi Sistr software

The main and most frequent cause precluding users form opening UST files is that no program that can handle UST files is installed on user’s system. The solution is straightforward, just download and install WiFi Sistr. The full list of programs grouped by operating systems can be found above. The safest method of downloading WiFi Sistr installed is by going to developer’s website (DNsoft) and downloading the software using provided links.

Step 2. Update WiFi Sistr to the latest version

If you already have WiFi Sistr installed on your systems and UST files are still not opened properly, check if you have the latest version of the software. Software developers may implement support for more modern file formats in updated versions of their products. This can be one of the causes why UST files are not compatible with WiFi Sistr. The most recent version of WiFi Sistr is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Set the default application to open UST files to WiFi Sistr

After installing WiFi Sistr (the most recent version) make sure that it is set as the default application to open UST files. The next step should pose no problems. The procedure is straightforward and largely system-independent

Selecting the first-choice application in Windows

  • Clicking the UST with right mouse button will bring a menu from which you should select the Open with option
  • Click Choose another app and then select More apps option
  • To finalize the process, select Look for another app on this PC entry and using the file explorer select the WiFi Sistr installation folder. Confirm by checking Always use this app to open UST files box and clicking OK button.

Selecting the first-choice application in Mac OS

  • Right-click the UST file and select Information
  • Open the Open with section by clicking its name
  • From the list choose the appropriate program and confirm by clicking Change for all....
  • If you followed the previous steps a message should appear: This change will be applied to all files with UST extension. Next, click the Continue button to finalize the process.

Step 4. Check the UST for errors

You closely followed the steps listed in points 1-3, but the problem is still present? You should check whether the file is a proper UST file. Being unable to access the file can be related to various issues.

1. The UST may be infected with malware – make sure to scan it with an antivirus tool.

If the file is infected, the malware that resides in the UST file hinders attempts to open it. It is advised to scan the system for viruses and malware as soon as possible or use an online antivirus scanner. If the UST file is indeed infected follow the instructions below.

2. Ensure the file with UST extension is complete and error-free

If the UST file was sent to you by someone else, ask this person to resend the file to you. The file might have been copied erroneously and the data lost integrity, which precludes from accessing the file. If the UST file has been downloaded from the internet only partially, try to redownload it.

3. Ensure that you have appropriate access rights

Sometimes in order to access files user need to have administrative privileges. Log in using an administrative account and see If this solves the problem.

4. Verify that your device fulfills the requirements to be able to open WiFi Sistr

If the system is under havy load, it may not be able to handle the program that you use to open files with UST extension. In this case close the other applications.

5. Ensure that you have the latest drivers and system updates and patches installed

Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with WiFi SiStr Exported User Theme Format files. It may be the case that the UST files work properly with updated software that addresses some system bugs.

Do you want to help?

If you have additional information about the UST file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on UST file.

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