right now this is the view when i visit the official download-link of nextcloud:
it’s the same when i try to upgrade from nextcloud 11 with the upgrader in the web-interface. the step “downloading” fails with “certificate expired”
Same problem as here: Failed to validate the SSL certificate for download.nextcloud.com:443
Seems like you have to wait until they renew the certificate for download.nextcloud.com
now the bug has been fixed
It is a Let’s Encrypt certificate that should be renewed automaticaly. You might have called the url during the short period where the old expired certificate was still active.
The certificate has just been renewed:
Valid from Sun, 21 Oct 2018 10:53:33 UTC|
Valid until Sat, 19 Jan 2019 10:53:33 UTC
The certificate has expired again … 
@MorrisJobke @nickvergessen Kann bitte mal schnell jemand danach schauen?
Gruß
See also here: Failed to validate the SSL certificate for download.nextcloud.com:443
We just have to wait I guess
Should work again 
1 Like
Yes! Thanks for the quick fix