diff --git a/content/posts/2023/47-update-weewx-netatmo-extension/index.md b/content/posts/2023/47-update-weewx-netatmo-extension/index.md
index ccc5ef9..f253421 100644
--- a/content/posts/2023/47-update-weewx-netatmo-extension/index.md
+++ b/content/posts/2023/47-update-weewx-netatmo-extension/index.md
@@ -3,7 +3,7 @@ title = 'Update weewx-netatmo extension'
 aliases = '/posts/2023-07-15-update-weewx-netatmo-extension'
 summary = 'Upgrade the authentication method from *password* to *preauthenticated refresh_token*'
 date = '2023-07-15T17:02:10+02:00'
-lastmod = '2023-11-18T21:58:00+0000'
+lastmod = '2023-12-10T16:34:13+0000'
 categories = [ 'amateur-radio' ]
 tags = [ 'wx', 'weewx', 'netatmo', 'server', 'selfhost' ]
 
@@ -69,6 +69,23 @@ A restart of WeeWX should fetch the data again.
 $ doas rcctl restart weewx
 ```
 
+## Random failure on authentication to netatmo server
+
+It sometimes happens at my server that I only get a 400 response:
+
+~~~plain
+weewxd: netatmo: netatmo-client: failed attempt 1 of 5 to get data: HTTP Error 400:
+weewxd: netatmo: netatmo-client: failed attempt 2 of 5 to get data: HTTP Error 400:
+weewxd: netatmo: netatmo-client: failed attempt 3 of 5 to get data: HTTP Error 400:
+weewxd: netatmo: netatmo-client: failed attempt 4 of 5 to get data: HTTP Error 400:
+weewxd: netatmo: netatmo-client: failed attempt 5 of 5 to get data: HTTP Error 400:
+weewxd: netatmo: netatmo-client: failed to get data after 5 attempts
+~~~
+
+![showing the menu](update-refresh-token.png "`read_station` is all you need")
+
+I don't have found a solution for this yet...
+
 ## Problems on a Raspberry Pi?
 
 I'm not sure about the cause of this behaviour, but **Andreas DG0LFL** reported, that his