Data type Range Default value
REG_DWORD 0x0 - 0x80000000 0x30F


Prohibits DNS dynamic update of certain types of records.

This entry is a bitmask. To disable DNS dynamic update on a record type, set the bit for that record type to 1, or sum the hexadecimal values of the record types.

Value Meaning
0x0 No record types are restricted. DNS dynamic update is permitted on all record types.
0x1 SOA records
0x2 NS records
0x4 Delegation NS records
0x8 Server host records
0x100 On secure dynamic update, exclude SOA records
0x200 On secure dynamic update, exclude root NS records
0x30F On standard dynamic update, exclude NS, SOA, and server host records. On secure dynamic update, exclude root NS and SOA records. Allow delegations and server host updates.
0x400 On secure dynamic update, exclude delegation NS records
0x800 On secure dynamic update, exclude server host records
0x1000000 DS peer records
0x80000000 Disable DNS dynamic update.

Activation method

DNS reads its registry entries only when it starts. You can change entries while the DNS server is running by using the DNS console. If you change entries by editing the registry, the changes are not effective until you restart the DNS server.

Note Image Note

Windows 2000 does not add this entry to the registry. You can add it by editing the registry or by using a program that edits the registry.

A value of 0x80000000 disables DNS dynamic update on the DNS server.

Tip Image Tip

To find other registry entries related to DNS dynamic update, type "dynamic update" on the Search tab in this file.