3. Debug DNS Issues

Windows 10 aggressively caches DNS with a DNS caching service and can sometimes lead to invalid results. First flush resolver caches and test.

powershell
ipconfig /flushdns
Clear-DnsClientCache

If that does not work, disabling the DNS caching service can be used. Cannot be disabled via services.msc.

Disable DNS caching service

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Dnscache

Start

DWORD

4

Updated: 2021-02-19

After resolving, re-enable the caching service and Reboot.

Enable DNS caching service

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Dnscache

Start

DWORD

2

Updated: 2021-02-19

Reference