How To Disable Caching of A DNS Record
Microsoft DNS Servers usually keep a record in cache for one day. You may need to turn off this feature for a DNS Server. You can change the registry item listed below to stop this behavior:
- KEY Name: HKLM\System\CurrentControlSet\Services\DNS\Parameters
- Entry Name: MaxCacheTtl
- Type: REG_DWORD
- Value: 0x15180 (this is the default value)
KEY Name: HKLM\System\CurrentControlSet\Services\DNS\Parameters
Entry Name: MaxCacheTtl
Type: REG_DWORD
Value: 0x15180 (this is the default value)
Set MaxCacheTtl to 0x0 to totally disable caching on the DNS server. In order to quickly answer to Client DNS Queries for the same name, the DNS Server stores the entries in memory. According to the value specified in the MaxCacheTtl registry entry, records are cleared from the cache. The TTL Value set on the Resource Record has been overridden by the value of this entry.
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