The issue is specific to one site and one Windows 10 PC, while other devices on the same Wi‑Fi can reach the site. This points to a problem on that PC (network stack, browser, security software, or name resolution), not the site or router.
Try these steps on the affected Windows 10 PC:
- Test basic connectivity and name resolution
- Open Command Prompt and run:
-
ping danskebank.dk -
tracert danskebank.dk
-
- If
pingortracertcan’t resolve the name or can’t reach the IP, there’s a DNS or TCP/IP issue on that PC.
- Open Command Prompt and run:
- Check for security software or filtering
- Temporarily disable any third‑party antivirus, firewall, or web‑filtering software (for example, security suites that inspect HTTPS traffic) and test the site again.
- If the site works with the security software disabled, adjust that product’s web protection settings or add an exception for the site.
- Reset browser and network settings
- Test in multiple browsers (Edge, Chrome, Firefox). If all fail, it’s likely below the browser layer.
- In each browser, clear cache and cookies and disable all extensions, then test again.
- Reset Windows network stack:
- Open Command Prompt as administrator.
- Run, one by one:
-
netsh winsock reset -
netsh int ip reset
-
- Restart the PC and test the site.
- Check for connection timeouts and adjust TCP/IP behavior
- If the error is specifically a timeout (site never loads, then times out), the PC might be dropping or giving up on TCP segments too quickly.
- On slow or problematic links, increasing the TCP retransmission limit can reduce timeouts:
- Open Registry Editor and go to:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters - Create or edit a
DWORDvalue namedTcpMaxDataRetransmissions. - Set it to
10(Decimal) instead of the default5. - Restart the PC and test again.
- Open Registry Editor and go to:
- This change increases how many times TCP retransmits data before giving up, which can help if the connection to that specific site is slow or lossy.
- Compare with another account or profile
- Create a new local user account on the same PC, sign in, and test the site.
- If it works under a new account, the problem is likely user‑profile specific (browser profile, per‑user proxy, or per‑user security software settings).
- Check for proxies or VPNs
- In Windows Settings → Network & Internet → Proxy, ensure no unwanted proxy is configured.
- If a VPN client is installed, disconnect or disable it and test again.
If the site still times out only on this PC after these steps, capture the exact error message and any differences between browsers, then work with the network administrator or ISP to check for routing or filtering specific to that PC’s IP or MAC address.
References: