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Unable to manage DFS namespace
(updated post) Hi, We have an issue with DFS at our site. It has been working fine for years, but recently the ability to manage it using the DFS MMC no longer works. DFS is still working for the users fine and we can map to it manually, but the MMC tool no longer connects. We can create and manage new namespaces fine though. The error is: " The namespace cannot be queried. The specified domain either does not exist or could not be contacted. " We can't risk recreating the namespace due to the impact on users, so anyone have any idea to fix this and get DFS MMC working to allow management of the namespace? Many thanks DB
RDP connection not possible and RDS-Virtualization role comes back after restart
Hello everyone, I have here an Windows Server 2022 Standard 21H2 (Build 20348.4052) (essentials) with the newest updates. This is the Domain Controller. Hyper-V is installed with one VM. The VM is a terminal server. In the past I have tried to install the terminal server on the Hyper-V Server. To do so I have installed all kind of remotdesktop roles. This was stupid of me. Especially it does not work on a DC. I want to connect as administrator by RDP (mstsc) to the server but it does not work anymore since I have installed all these roles and features. No other users are connected. I can still connect to the VM. In one situation I was able to connect to the server but after entering the password I have received the error 0x808 (0x101) that there is no licence server for remote desktop available. I have now removed all roles related to the terminal server and the rdp which I have installed. But I can not uninstall RDS-Virtualization. After uninstalling it comes back when I perform a restart. I have already tried Uninstall-WindowsFeature -Name RDS-Virtualization -Remove In the server manager appears a menu item about remote desktop services. But there is written that no connection broker server is in the pool. The submenu server lists my DC. I have found in the eventmanager a error related to the uninstalling process 0x80070057 wrong parameter But I do not have more information. DISM /RestoreHealth and sfc /scannow did not find any problems. I am not using VDI but is maybe the Hyper-V reinstalling the role after the restart? Do I need to uninstall the role to make RDP working again or could be there other reasons? Do you know where I find a detailed log about the problems about uninstalling the role and maybe the installing? Do you have any idea how I can find out more about the problem? Thank you!
2025-10 Cumulative Update for Windows Server 2019 (KB5066586) Undoes Update on Reboot
We have a Windows Server 2019 Standard which will not install the 2025-10 Cumulative Update for Windows Server 2019 (KB5066586) update. The installation part goes fine, but when the server is rebooted to finalize the update, it goes into "Undoing changes". Then it reboots again, and I am back where I started. The error code is 0x8007000d. I have done the following to debug this: Ran System File Checker sfc /scannow. No errors found. DISM /Online /Cleanup-Image /ScanHealth. No errors found. Ran Windows Update Troubleshooter. No errors found. Shut down Windows Update services. Renamed SoftwareDistribution and Catroot2 folders. Restarted services. No change. Ran ScanDisk. No errors found. Disabled antivirus. No change. Ran Disk Cleanup and manually deleted additional temp files. No change. Checked Event Viewer. Only error is Event 20 which is a failure of the Windows Update Agent. I am out of ideas. If anyone has some, I would much appreciate the help. I am out of ideas.
Hyper-v Virtual Switch warning
We have a four nodes Windows 2025 Hyper-v cluster with only one virtual switch of 2 NICS On each node we get this warning repeatedly V-Switch operation IOCTL_SWITCH_GET_INFO_EX (2241648) took too long to complete. Operation Type: IOCTL. Execution time 0 ms. Queued time 0 ms. Expected execution time less than 0 ms. SwitchName: CF06EC90-20EB-460D-9A88-6820BFCCB14D. SwitchFriendlyName: SWPrincipale Searching for it didn't get any useful thread so far, has anyone seen it and found the cause ? thanksWindows Server 2016 Essentials failing to get offered updates via Windows Update since July 2025.
Hi, Dealing with an ongoing issue where Windows Server 2016 Essentials (other SKU's seem fine) not being offered updates via Windows Update anymore, message says "Up to date". Manual updates via Update Catalogue work fine and although WS 2016 is ending support in Jan 2027 this is over a year away and while Server Migrations are happening in earnest end of first quarter next year it is not happening now. This can be replicated on a clean install on different hardware both Physical and Virtual. Any later Service Stacks or Cumulative updates installed manually have not fixed the issue and neither does clearing "Softwaredistribution" or "Catroot2" etc... Any feedback would be appreciated and confirmation of the issue from Microsoft would also help clarify the issue and potential fix. Thankyou.Windows Server unable to install Cumulative update 21H2 for x64-based Systems (KB5066782)
Hi All, Unable to install the above update. I tried things like sfc/scan, dism tool features but non works. all other updates install except the above. Tried running the update manually but failed. Think this is also breaking functionality of the virus /malware guard. ACS (azure Code signing). The last option that I am thinking of is to run a sever repair with the installation media. I also tried windows trouble-shooter for updates. Any ideas ? This is installed as a virtual machine on Hyper-V. Don't want to rebuild the server. Looking for a solution. The Error code is 0x80073701Migrate upgraded ADFS farm from WID to SQL
Hi, We have a few ADFS farms that have been upgraded/migrated from ADFS v3 to ADFS v4 in the past. We now want to migrated the WID database to SQL Always-On. There are numerous articles describing the migration from WID to SQL, but they all only mention AdfsConfiguration.mdf, but in an upgraded farm you also have a AdfsConfigurationV3.mdf (and its respective ldf). Can we ignore the V3 files or do we need to migrate them to? Please advise! Kind regards, Enrico Klein
Allow “Edit/Save/Rename Without Delete” NTFS Permission
Problem Description: I manage shared folders using NTFS permissions. I want users to edit, save, and rename files without being able to delete them. Currently, if “Delete” and “Delete subfolders and files” are unchecked, users cannot delete, but they also cannot save or rename files because most applications temporarily delete/rename files during saving. If delete is allowed, users can save but also delete files. Request: Introduce an NTFS permission that allows file editing and renaming without granting delete rights, to prevent accidental data loss while maintaining normal file operations. Observation: This limitation is inherent in the current NTFS permission model. NTFS does not distinguish between: Intentional deletion by user File replacement/temporary deletion by application As a result, administrators cannot fully protect shared folder data while still allowing normal file editing workflows. Impact: Prevents enterprise administrators from enforcing safe file editing without risk of accidental deletion. Creates workarounds such as Shadow Copies or backups, but these do not prevent the deletion itself. Suggested Improvement: Introduce a new NTFS permission or enhanced behavior that allows: Edit, save, rename files without granting delete rights Deny manual deletion of files/folders by users Maintain compatibility with standard application save workflows Such a feature would significantly improve data protection in enterprise file shares, reduce accidental data loss, and simplify NTFS permission management.
Windows event collector (WEC) troubles
Hi all. I have really frustrating issue I can`t resolve. We have set up WEC, a long time ago... Now I upgraded in-place to server 2025 and it`s behaving really weird. Problem is this: I created new subscription and my PC was sending events just fine yesterday. I rebooted server and my PC, still all is fine. Turned off my PC, went to sleep, started working in the morning and NO logs from my machine in WEC. At all. Other PCs also randomy sending logs some yes some no. So I tested WinRM connectivity all fine. Error on my PC: The forwarder is having a problem communicating with subscription manager at address http://MYWECSERVER:5985/wsman/SubscriptionManager/WEC. Error code is 2150859263 and Error Message is <f:WSManFault xmlns:f="http://schemas.microsoft.com/wbem/wsman/1/wsmanfault" Code="2150859263" Machine="MYWECSERVER"><f:Message> <f:ProviderFault provider="Subscription Manager Provider" path="%systemroot%\system32\WsmSvc.dll"> <f:WSManFault xmlns:f="http://schemas.microsoft.com/wbem/wsman/1/wsmanfault" Code="2150859263" Machine="MYWECSERVER"> <f:Message>The event source of the push subscription is in disable or inactive on the Event controller server. </f:Message></f:WSManFault></f:ProviderFault></f:Message></f:WSManFault>. I have also some errors on WEC server: The Subscription DomainComputers could not be activated on target machine MY-PERSONAL-PC due to communication error. Error Code is 0. All retries have been performed before reaching this point and so the subscription will remain inactive on this target until subscription is resubmitted / reset. Additional fault message: eventsource is in either disable or inactive state OR The Subscription DomainComputers could not be activated on target machine MY-PERSONAL-PC due to communication error. Error Code is 20. All retries have been performed before reaching this point and so the subscription will remain inactive on this target until subscription is resubmitted / reset. Additional fault message: eventsource is in either disable or inactive state Also runtime status is like this: A lot of Active computers, mine is in yellow Inactive state... I have NO idea how to fix this, and why it works for some clients and not for others and most perplexing question, why it worked yesterday until sleep. Just like that WEC sets status to Inactive and then my PC sends logs and does not change status back to Active. Thanks for all suggestions!
