can you install any other plugin using the built in “plugins admin” ?
(note: do not use the old “plugin manager” to install any plugins, as it is not compatible with newer versions of notepad++ 7.6.x and above.)

please also post your notepad++ debug information here.
(notepad++ menu > ? > debug info > copy to clipboard)
preferably both from your installed and your portable version.

my sincere apologies, i completely missed out, that proxy support for plugins admin already exists.
i am so embarrassed right now (but in a good way, as it will remind me to test everything once more, before i give an answer that could be wrong).

now that i had a closer look at it, it even seems as proxy support for plugins admin already has been there for a while, as it uses the same gup.exe updater, which already supported proxys (without credentials).

btw.: big thanks for reporting back, sharing your findings and for not giving up until you solved the problem, even after my incorrect post.

The fact that the application does not report an error message does not make it easier to find it yourself.

i agree completely.
plugins admin is still kind of beta at the moment, but it looks already very promising and it’s tamper safer due to, for example, a plugins list that has to be code signed to work.

big things yet to do are:

• add proxy support
• add a list of common error messages that are known already
• make the plugins list sorted (currently they show in text order of the json list in nppPluginList.dll)

I miss both a successful installation / update, as well as an error, a corresponding error message.
The fact that the application does not report an error message does not make it easier to find it yourself.

unfortunately there is no log for plugins admin’s traffic attempts at the moment, and it still lacks many error messages, as well as proxy support.

but if you have time, please start the portable notepad++ you have downloaded from the link above.
then go to the help menu (?) and select debug info
copy this debug info into the clipboard and paste it here.

also please try the same portable version from the link above on another pc, using a different internet connection and preferably a different location, then tell us your result.

if it is of interest, two possible causes for your described symptoms could be:

the machine that shows this behaviour is behind a proxy server that separates this machine from a direct access to the internet.
(you can crosscheck this by opening cmd.exe and enter ping google.com. if the host could not be found, you are most likely behind a proxy)

the affected user account on the machine that shows this behaviour, has permissions to create and modify files on the desktop, but spawned 3rd processes, started by an application which is executed and/or owned by this account, lack the permission to create files or folder structures.

you just have to create a subfolder within plugins with exactly the same name as the plugin.dll (without the extension .dll) and move the plugin.dll into this folder.

if a plugin, for example NppFTP is currently located in c:\TOOLS\NP++\plugins\NppFTP.dll on your machine, you will have to create a separate sub folder for it and move it there
c:\TOOLS\NP++\plugins\NppFTP\NppFTP.dll

welcome to the notepad++ community.

After selecting the plugins, notepad ++ restarts, but neither the updates nor the installation of plugins was performed …

i can not reproduce this, except if you are missing full rights to the parent folder where you have put your portable npp.7.6.2.bin.

please try to download a fresh portable version from here
put the zip file on your desktop, and extract it to a folder on your desktop
open this folder and execute notepad++ by double clicking on notepad++.exe
then try installing any plugin, for example nppftp, using plugins admin

if this works, then do following crosscheck:
search for your original portable notepad++.exe
right click on it and run it as administrator
then try installing any plugin, for example nppftp, using plugins admin

notes:

• you should not put a portable version to C:\Program Files or C:\Program Files (x86) due to restricted permissions of those folders
• npp.7.6.2.bin.zip has to be extracted to a folder and should not be run directly from the zip file

plugins admin has been added to the portable version of notepad++ today 👍
https://notepad-plus-plus.org/download/v7.6.2.html

maybe useful for you too, see https://notepad-plus-plus.org/community/topic/16790/notepad-7-6-1/42

Eko