Content
Windows server 2019 dhcp server redundancy configuration(failover configuration)
hello. I have a question. After installing winodws server 2019 dhcp, I want to ask if the settings set in dhcp server 1 are automatically synchronized with dhcp server 2 when configuring failover. (Only 1 is set and 2 is when only dhcp is installed) (I…


DHCP server does not assign IP and Yellow Exclamation mark
Good Day, I am experiencing a bit of a problem with my DHCP Server (Windows Server 2012 R2). For some reason it is displaying yellow exclamation icons next to the server and scope tree items. When this happens, no new machines can connect to the network…


How to fix The application-specific permission settings do not grant Local Activation permission for the COM Server application with CLSID
My pc keeps crashing in the middle of games and I can't figure out why. I have followed every single guide on this issue but nothing is fixing it. This is the system warning message: The application-specific permission settings do not grant Local…


Logon attempt failed via RDP periodically
Hey everyone, We've got an issue, domain users who allow to access to member server\client via RDP couldn't access even Administrator who allow to access to any computer\Server object in domain. it's happened periodically. which means if we would…


How to Secure Domain Controller/DHCP/DNS Servers
Hi, I need to secure DC/DHCP/DNS server. What is the best practice to do this. E.g. allow RDP session from Jump box What ports needs to be open for clients? Should it be lock on Server Subnet?


Does the broandband connect support DNS over https in the windows 11?
Hello: I suddenly found that the svchost.exe only had 53 udp outbound to the dns while the other such as system service could use 443 tcp outbound to the DNS after setting the doh in the modern setting app layout in the LAN section. And it seems to…


Win11 not honoring DHCP option 119 DNS suffix, KB5012643 says it should be fixed?
Using a new DHCP server that sends DHCP option 119. Ubuntu Ok, WinServ2022 Ok, Win10 Ok, Win11 no DNS suffix. Found KB that says it should be fixed. Found Question indicating it is still not fixed. Not fixed in my Win11 Pro 22H2 22621.1413. Is it…


windows 11 vs windows 10 reciving DNS Suffix Search List from DHCP
We have an issue in Windows 11 machiens which are not reciving DNS Suffix Search List from DHCP. All windows 10 machine in the same network are receiving the dns Suffix Search List from DHCP and the windows 11 not receiving i know i can add the…
DNS entry flooding
We are receiving a flood of DNS entries on DHCP logfile. 3 entries per second for each asset. This situation starts at 00:00 in the day and continues till 23:59hrs in the night. The cycle continues with entries like: DNS Update Request: DNS update…
Ldap mnemonics not applying
I want to capture any direct dependancies to a DC that I want to decommission. I am following these guidelines: https://www.devopsage.com/domain-controller-decommission-step-by-step-process-to-identify-apps-connected-to-a-specific-dc/. I have configured…
WiFi-Direct Device can't reconnect after first disconnect. Reconnect only works after restarting PC
I have a Qt Application that has an Integration of the C++/WinRT-Library so i can use WiFi-Direct (I used the Microsoft UWP WiFi-Direct sample for comparison). The goal is to connect the Application to my WiFi-Direct Device and establish a Socket…


Failover Cluster DNS error, event 1257 keeps coming back
Hi, I have two failover clusters created, for which I did NOT pre-create the DNS records for the cluster or role names. The DNS records are created when the cluster/role is brought online. On one of the clusters, I keep getting event ID 1257, where…


DHCP server not display address lease in GUI
Hi support team, I have a problem with Windows server 2012 DHCP server manager not showing address lease in GUI what is problem and what is the solution?
How to let windows 10 Clients get IPs from DHCP but from different scope (Lab environment on Hyper-V))
Hi How to make my Windows 10 clients get different IPs from different scopes. Please, how to do it on Hyper-V Lab. I built Lab where all VMs have different static IPs, some of them are in the same range and some others are in a different range, the Lab…
IP address lease with DHCP Server denied
Hi all, I recently had my ISP change over from a PPOE service to a IPoE service. The day of this changeover, we lost all internet from our NBN box and our Netgear router. We switched to a different DHCP provider (Optus) who provided us with an entirely…


in android and apple phone showing AP has no internet access
Every laptop desktop user can access internet from my server but Android and Apple users cannot access internet while I have registered mac.


Windows 2016 DHCP - Option 82 Suboption 5
Hi Team, Option 82 is not available in Windows Server 2019 OS. Please share the steps to add the "Option 82 Sub-option 5" in Windows DHCP Servers Regards, S Kannan


DNS Servers Setup Configuration & best practise
we are have connectivity issues between our office & the servers hosted in the cloud. We think its a DNS issue and we like some advise if the below setup is the best practice and or do we need to change anything to make connections within the office…


Windows Server 2012R2 DHCP issue
Hi, I noticed I have a problem with my DHCP service, which based on Windows Server 2012 R2. The problem is that almost no available ip addresses on scope 10.114.34.0. The dynamic pool of ip addresses is 10.114.34.128 - 10.114.34.191. Subnet mask is…


Windows 2019 RRAS Server unable to utilize DHCP server on same subnet to issue to RRAS clients
Hi, I've seen this occur twice already when setting up new Windows 2019 servers. Most recently, I introduced a new Windows 2019 to replace an older Windows 2008 R2 server as our RRAS server. Simple setup, with single domain, single subnet, one domain…