DHCP Failover - can this be hosted on a VM in Azure?
We have a client that requires a DHCP failover service in case of outages with their on premise DHCP servers - previously we ran this in private cloud and then migrated it to Azure VM - however today they suffered an on prem DHCP server failure and the…
What causes 1065 to be logged in the event ID in the DHCP service?
What causes 1065 to be logged in the event ID in the DHCP service? Also, what kind of impact does the recording of event 1065 have on the behavior of the DHCP service?
After update from Windows 10 to Windows 11 - IPv6 RFC 6106 / RDNSS (Router Advertisement Options for DNS) stopped working
I was using Windows 10 Education (most recent build) with automatic configuration of networking on Ethernet interface. Both IPv4 and IPv6 configuration was obtained from network correctly (with no problem for many years.) IPv4 address and other…
What would make DHCP server lose authentication?
We are a small hospital with a set of vendor devices operating within a private network. The server controlling the private network has two NICs, one on our domain, the other on the private network. They run DNS & DHCP for the private network --…
Why does the DHCP server keep losing authorization?
We have a dual-NIC device serving a private network. We've authorized the DHCP server multiple times, and every time it gets authorized, the authorization disappears within a few days. The DHCP service claims it needs to be authorized, and the admin…
DHCP Address State is active even when the lease has expired
For some reason, the DHCP address state stays active even when the address lease has expired. The expired leases don't show up in the DHCP Management Console, but when I run a powershell script to get the active leases, all the expired leases are still…
DHCP Dynamic Updates not working consistently
Hi, I have an issue that I'm struggling to solve fully. Basically DHCP is not consistently keeping DNS in order so we have multiple hostnames with the same IP. We have LOTS of scopes, with different lease times. Sometimes it works and sometimes it…
does DHCP data still on two DHCP servers in hot standby mode?
Hi all, We have 2 windows 2019 DHCP servers which are configured to use hot standby mode. Now, we need to migrate to windows 2022 servers. If we remove the failover relationship between two DHCP servers, will DHCP data still reside on active and…
Issues with DHCP DNS updates - events 20319 & 20322
I replaced a 2012 DC (with DNS and DHCP) with a 2019 server. I am now noticing errors in the DHCP event logs on the 2019 server. I still have another 2012 server and that one is not getting these errors. "Forward record registration for IPv4…
Why is my DNS servers not updating when connecting to a hotspot?
This is on a Surface Pro running Windows 10. Pro The issue is, when I connect to a hotspot outside my home, the DNS servers do not update. They still show the servers from when I was connected to my home Wi-Fi. This is an issue since the first two…
dns debug log character/locale configuration
How can I change the region/locale configuration of the DNS debug logs? I'm noticing some extra characters which break do not play nice with a parser I use for analysing the logs. I'd rather not change the parser to support these characters but…
A large number of bad_adderss results in a full DHCP pool
DHCP service installed on win server 2016, only one DHCP server on the domain, now every day there are 10~20 bad_adderss, looked at DHDP log and L3 arp, found no exception, there is no direction of investigation, I would like to encounter this problem,…
I have migrated the on-prem domain controller to Azure vm as ADC. after that I converted my Azure ADC to primary DC. then I turn off the on-prem ADC which was DC before the migration. now Client computer(on-prem or Azure) not able to join domain.
I have migrated the on-prem domain controller to Azure vm as ADC. after that I converted my Azure ADC to primary DC. then I turn off the on-prem ADC which was DC before the migration. now Client computer(on-prem or Azure) not able to join domain. If I…
DHCP server the specified servers are already present in the directory service
Our DHCP server can't be authorized and scope won't be activated after the replacement of branch server/DHCP server, please note that we reuse the server hostname and IP address of previous DHCP server. We already removed the DHCP server from the list of…
A large number of bad_adderss results in a full DHCP pool
DHCP service installed on win server 2016, only one DHCP server on the domain, now every day there are 10~20 bad_adderss, looked at dhcp log and L3 arp, found no exception, there is no direction of investigation, I would like to encounter this problem,…
DHCP problem
Hello! Can anybody tell me why does Windows Server 2012 DHCP service stop giving out IP addresses as soon as the number of available addresses plunges to 4? Why doesn't it just first give out all 100% of addresses before stopping assigning ip…
DHCP - Reservas de IP - Replicação
Prezados, Tenho o seguinte cenário: DC01 (primário) e DC02 (secundário) em produção. Quando eu faço uma reserva de ip na função DHCP em "Reservas" no DC01, ele não replica para o DC02 (nem mesmo esperando 15min ou forçando o gupdate…
I have idea for revive Windows phone so how I contact Microsoft
I have idea for revive Windows phone so how I contact Microsoft . No one make successful mobile os this time only one how make successful mobile os that Microsoft. No more time left 1/2 year left . Google chrome os is growing slowly biggest threat for…
Probleme carte réseau
Bonjour, Depuis un moment, j'ai les cartes réseau de mes pc qui ne fonctionne plus, du moins, il y a du réseau mais pas d'internet. En ip fixe ça fonctionne mais pas en dhcp. J'arrive à faire un ping sur le serveur dhcp et la bonne adresse est…
Need Help Configuring Multicast Routing on Hyper-V Environment for RTP Streams.
Hello, I'm relatively new to network configuration on Virtualization Environment, and I'm currently facing an issue with setting up multicast streaming in my Hyper-V environment. Here's the scenario: I have a streaming device connected to the External…