cannot find esp8266 via boardmanager

hi there,
using arduino ide 1.8.12 opened preferences window and did enter ... index.json ... index.json
(all comma separated) into the Additional Board Manager URLs field.
then i opened the boardmanager (Strg+Shift+I) and enter 'esp' in the search field.
BUT I CAN'T FIND "esp8266 by ESP8266 Community". it's not listed.
thanks in advance

First of all, you should only add a single URL for each package.

I don't know whether you cut out part of the first two URLs before posting on the forum, or whether those are the URLs you added to the configuration. If the former, it prevents me from checking them. If the latter, then those are certainly invalid URLs.

I was able to check the third URL, and it is invalid.

You should always follow the official instructions and use their recommended Boards Manager URL when installing 3rd party boards platforms:

Don't follow instructions you find on random blogs, forum posts, etc., as they may be outdated or incorrect.

So delete all those URLs from your preferences, replace them with the official URL, and try again.

first thanks for your time ...
here are the links:

both are recommended and both work (are reachable) ... but i can't install the library of ESP6288 from esp6288Community ... :frowning:

i did put them as solid, didn't work either ...


additive : is there a way to include a locally available json file in the arduino as a library? the file package_esp8266com_index.json is in the directory C: \ Users \ [user] \ AppData \ Local \ Arduino15

thanks in advance

First, make sure you only have the single official URL in your "Additional Boards Manager URLs" preference for the ESP8266 (you can have comma-separated URLs for other 3rd party boards platforms in there too if needed).

Then, please do this:

  • Close all Arduino IDE windows.
  • Start the Arduino IDE.
  • Tools > Board > Boards Manager
  • Wait for the downloads to finish.
  • Click the "Close" button.
  • Check the black console pane at the bottom of the Arduino IDE window. Do you see any text there? If so, copy and paste it in a reply here.

That might provide some information that we can use to help you.