VMU File Extension

VMU file icon

NanoZoomer Uncompressed Virtual Microscope Specimen

What is a VMU file?

Files with the VMU extension are specifically tied to NanoZoomer Uncompressed Virtual Microscope Specimen, a Graphics Files type, and there are 556 files in this category.

VMU file support extends to various operating systems, including Windows. You can view a VMU file using one of 2 programs, for example netScope Viewer and ImageScope.

Programs that support VMU files

How to open a VMU file?

The most common reason why a VMU file cannot be opened is the absence of required software. To fix this, select a compatible program from the list. Then visit the official developer website via the provided link, download the program, and install it on your system.

Thanks to their popularity, netScope Viewer and ImageScope are often the go-to programs for managing VMU files. To install the updated version of netScope Viewer, simply go to the Net-Base site and download the installer compatible with all major platforms.

After setup, the operating system should recognize VMU files and link them with netScope Viewer.

Set netScope Viewer to open VMU by default

Change default apps on Mac

  1. Right-click or use Control + Left-click on the desired VMU file to access the file’s context menu;
  2. Choose "Open in Application" and click "Other";
  3. Scroll down to the bottom of the window, and there you will find the "Enable" menu. The default selection is "Recommended Programs";
  4. Choose "All Programs" within this menu and locate netScope Viewer. Check the box next to "Always open in app" to set it as the default program.

Change a default app in Windows

  1. Start the process by right-clicking on your VMU file and selecting "Open With". From there, click "Choose another app" to continue;
  2. Find the netScope Viewer application in the pop-up window and select it as your preferred program;
  3. Select the "Always use this application" check box and click "OK" to save your selection as the default application for opening VMU files.

Easy VMU Troubleshooting

VMU files can sometimes be tricky, but minor software adjustments usually resolve the issues. Refer to the tips below for guidance.

Why does netScope Viewer stop responding or crash intermittently?

Lack of regular software updates can cause netScope Viewer to crash. Make sure you have installed the latest updates for Net-Base products.

Restarting your computer is often an effective solution to resolve various common problems. Therefore, it is recommended to do so before making any changes to the software configuration.

What are the best practices for repairing a VMU file that has gone bad?

Start a recovery program, open the damaged VMU file and then select the "Repair" menu item to start the repair procedure. Please wait patiently for the recovery process to finish as it will automatically repair the damaged graphics files.

How can I confirm if my VMU file has been damaged?

Characteristics of corrupted VMU graphics files can include:

  • Trying to work with the archive in netScope Viewer or other programs causes instability or program crashes;
  • The file does not open correctly or displays error messages;
  • An unexplained increase in the size of the VMU file;
  • The file operation is accompanied by the display of error messages;