Setting a user file extension is not working on brand new Windows 10

  • I’ve tried everything I can think of - running as administrator, editing both langs.xml files, in AppData and in Program Files, adding the extension through the style configurator… nothing is working! I just want inc files to look like html files - what am I doing wrong?

  • I have the same problem currently. Added a user file extension (rrx) into the VB/VBS category some time ago already but recently these files are back to being detected as xml types.
    Since this feature has worked for me in the past I’m not sure if this is due to Notepad++ or some Windows update. I have this problem with Notepad++ 7.5.1 on Windows 10 and 2012 R2. Both OSes have latest updates.

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