Now that Anki relies on your system’s certificate store, this seems to happen when there’s a proxy or certificate or antivirus getting in the way of the connection. The same suggestions for issues connecting to AnkiWeb otherwise often work – Error establishing a secure connection when syncing - Anki FAQs .
If not, take a look at these other threads and try any solution you haven’t so far.
- problem with using the add on’s- an error keeps showing up (Reddit)
- Add ons not able to be installed (mac 2.1.60) - #2 by ferophila
- Issue while adding add-ons - #3 by dae
I’ve seen this a few times recently, and other threads seem hard to locate, so I’m adding the error message as text for searchability –
1782362167: Please check your internet connection.
HTTPSConnectionPool(host="ankiweb.net’, port=443): Max retries exceeded
with url: /shared/download/1782362167?v=2.1&p=250204 (Caused by
SSLError(SSLCertVerificationError(1, ‘[SSL: CERTIFICATE_VERIFY_FAILED]
certificate verify failed: certificate has expired (_ssl.c:1129)')))