Checklist: Seven Essential Settings To Check When Germany Cannot Connect To Bilibili's Servers

If you find you can't connect to Bilibili's servers in Germany, following the steps to quickly locate the issue. This article provides seven professional, actionable checkpoints covering network layer, system, and application settings, helping SEO resolve connection anomalies in a friendly manner.

1. Check the status of your local network and ISP

First, confirm whether the issue is with the local network or ISP. Use ping and traceroute to trace Bilibili's domain name, and observe at which jumps there are packet loss or increased latency. If necessary, restart the modem and router, and test on another network (such as a phone hotspot) to rule out carrier restrictions.

2. Verify that DNS resolution is correct

DNS errors are a common cause. Use nslookup or dig to query the resolution results of Bilibili's domain name, and compare the differences between different public DNS providers (such as 8.8, 8.8.8, etc.) and ISP DNS. Try clearing the local DNS cache (Windows: ipconfig /flushdns, Linux: systemd-resolve --flush-caches).

3. Check the local hosts file and proxy settings

Tampering with or manually rewriting the hosts file can cause the domain name to point to the wrong IP. Check C:\Windows\System32\drivers\etc\hosts or /etc/hosts to confirm there are no abnormal entries. At the same time, confirm that the system or browser has not set up local proxies or improper blocking, and clean or restore the proxy configuration.

4. Router and firewall rules (including NAT/port).

Router firewalls or home network security settings may block outbound connections. Check the router's firewall, parental controls, and NAT rules, and confirm that ports 80/443 are not blocked. When the server is unreachable, you can check logs on the router to look for discarded or rejected connection records.

5. IPv6 and MTU-related issues

In some environments, enabling IPv6 causes a double-stack exception, causing unavailable links to be prioritized. Test with IPv6 disabled and try again. Additionally, improper MTU settings can cause sharding failures, resulting in HTTPS handshake failures. You can try adjusting the MTU or using ping band size parameters for diagnosis.

6. Browser, TLS certificate, and system time

Inaccurate browser cache, extensions, or system timing can all affect HTTPS connections with Bilibili. Clear browser cache, disable extensions, and use curl -I or browser developer tools to check for TLS handshake and certificate errors. Ensure the system time and time zone are correct to avoid certificate verification failures.

7. VPN, geo-restriction, and CDN allocation

Bilibili uses CDN and regional allocation strategies, and some nodes may be inaccessible or limited by speed abroad. If using a VPN or proxy, make sure the outbound node is stable and responsive. If necessary, switch VPN nodes or consult your ISP/service provider for regional blocking.

Summary and suggestions

If you encounter a German server that cannot connect to Bilibili, you should check each item according to the checklist: start with network and DNS, then check local hosts, router firewall, IPv6/MTU, and application-layer TLS issues. If the issue remains unresolved, record traceroute and logs to provide feedback to your ISP or Bilibili technical support, and consider temporarily using reliable acceleration/proxy services to restore access.