Setting update proxy in Notepad++

Having problems setting, and retaining, the Updater Proxy in the Notepad++ UI?

Then resort to the command line. Open a cmd prompt, with administrator privileges.
At the prompt go to the Notepad++ updater directory, the following works for default installations:

cd C:\Program Files (x86)\Notepad++\updater

From here run this command:

gup -options

This brings up the same dialog as the UI but this time the values you enter will be saved.

gup-options