I See a Blank Excel Spreadsheet When I Open TDMS Files

Updated Jul 10, 2020

Reported In


  • LabVIEW
  • TDM Excel Add-In
  • FlexLogger
  • DIAdem
  • DAQExpress

Issue Details

I used to open TDMS files(.tdm) with Microsoft Excel filled with data. However, I see a blank Excel spreadsheet when I open TDMS files now. How can I fix it?


Check if Excel is set as the default program for .tdm files. Open the settings in the Windows startmenu. Click on Apps and then choose default apps. Then click on Choose default app by file type and search the ending .tdm. If Excel is set as default app for .tdm files, change the default app to Excel Importer.

Additional Information

If you still can't open TDMS files or you can't find Excel importer in the default app, you probably need to install TDM Excel Add-In for Microsoft Excel. For further information, please refer to the related links below.