Can't reset Number of Columns.
Settings|Preferences|Show vertical edge|Number of columns. Is set to 100 and won’t be changed.
in order to be able to give a more precise answer I would ask you to
post your debug-info which can be found under the last menu item, the ? menu.
Did you try clicking on the 100? For me, it’s like a hyperlink - highlighted blue and underlined - and when clicked, it opens a small popup text box which allows me to change the number - to 80 for example, which is what mine is set to and working fine on N++ 7.7.1 64-bit.
Done that. Entered 80 into the box but when it is closed the value remains unchanged.
Debug info: as requested:
Notepad++ v7.7.1 (32-bit)
Build time : Jun 16 2019 - 21:14:50
Path : C:\Program Files (x86)\Notepad++\notepad++.exe
Admin mode : OFF
Local Conf mode : OFF
OS : Windows 7 (64-bit)
Plugins : ComparePlugin.dll DSpellCheck.dll FingerText.dll mimeTools.dll NppConverter.dll NppExec.dll NppExport.dll
How do you close the popup box - not by the red X. Just enter the number you want and press the “Enter” key on your keyboard. Pressing the red x indeed closes the popup and does not change the value. You’ll need to press “Enter” key on your keyboard for the value change to take affect.
in case it doesn’t help what @michael-vincent suggested, try the following.
Goto %APPDATA%\notepad++ directory
rename the file config.xml to something else.
This forces npp to recreate a default config.xml and some settings, which you might have set previously, get reset but I hope it solves your issue too.
Enter key does the job. Thanks.