unable to save applicationHost.config file

I could not save applicationHost.config file, it says "save failed and it is open in another programs" while I stop IIS service and closed visual studio, any idea?

Where is the applicationHost config file?

The location of the file is currently in the %windir%\system32\inetsrv\config directory.

How do I open an applicationHost config file?

Step 1: Open applicationHost.Click File, then Open, and in the File name: dialog box, type %windir%\system32\inetsrv\config\applicationHost. config and Click Open.

Where is vs applicationHost config?

vs\config\applicationHost. config . This file (and the . vs folder) is hidden by default in Windows Explorer.

If you're on a 64-bit architecture and trying to edit with a 32-bit editor (e.g. Notepad++) apparently you can't save the file. Try editing your file with the regular notepad that is shipped with Windows. To be absolutely sure, also run Notepad as an Administrator