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Can't share a folder on a local network in Microsoft Windows Server 2025 STD
We have two Microsoft Windows Server 2025 Standard (Version 24H2, Build Number 26100.32995) servers in our Active Directory. We can't share folders; it constantly asks for a username and password. We've tried every solution, but nothing worked. I found a similar thread, but the solutions there didn't work either. topic : https://learn.microsoft.com/en-us/answers/questions/5559013/opening-fire-share-on-2025-server-from-another-202 How can i solve this sharing problem ?BLOG: CVE-2024-38063 - Disabling IPv6 binding = fix - or not?
Dear community, in today's LinkedIn Stream and other social media you might have noticed a recent CVE and the recommendation to disable IPv6 in Windows Server and Windows Client. We are talking about this one: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-38063 Reading the advisory carefully, Microsoft, strictly speaking, does not directly recommend disabling (technically remove binding) of IPv6. Citing: "Mitigation refers to a setting, common configuration, or general best-practice, existing in a default state, that could reduce the severity of exploitation of a vulnerability. The following mitigating factors might be helpful in your situation: Systems are not affected if IPv6 is disabled on the target machine." Maybe I am a bit nitpicking here about old experiences and would greatly appreciate a refreshed Microsoft statement on the disablement (unbinding) of IPv6 and the side-effects in 2024. What we have learned in the past - do no disable IPv6 easily. - yes, you can face issues with IPv6 being on by default and unexpected or misconfiguration. Often caused by DHCPv6, especially in the combination of critical domain controllers, Dual Stack ISPs and SoHo routers messing up your DNS. What's the fuss about IPv6? I am not actively using it in corporate / at home. IPv6 is being used in Windows. More specifically non-routable fe80 addresses and loopback ::1 for internal purposes of Windows or other software. One may complain use cases are - unrightfully - not well and transparent documented. Have a read in the past Here are some references that Copilot brings up. Trust my memory, I've read more like this. https://techcommunity.microsoft.com/t5/core-infrastructure-and-security/ipv6-for-the-windows-administrator-why-you-need-to-care-about/ba-p/256251 https://community.spiceworks.com/t/is-it-a-bad-practice-to-disabe-ipv6/781811/9 https://learn.microsoft.com/en-us/troubleshoot/windows-server/networking/configure-ipv6-in-windows My personal conclusion Hold on, we need patches for this CVE, but we should not disable IPv6 easily. Please disable IPv6 temporarily, when you cannot patch this CVE immediately / in time. Take notes which system you have had to disable and consider re-enabling once patches have been tested and applied. If you are using IPv6 knowingly, note the NIC configs. They will be lost when using static settings rather DHCPv6. I am sad to see that NetSec people, undoubtedly experts in their area, jump on the bandwaggon esp. on Social Media to easily disgrace the IPv6 by default enablement of Windows Client and Windows Server, telling you the easier story: "Disable IPv6 and you are good / if you do not need it." Let me counter: You might not know you're "needing it" it in the first place. Whenever you are changing system defaults in Windows, mind that Microsoft and other software vendors may not consider these changes in their testing. And the Crowdstrike Black Friday showed us clearly how outlier system configs and unwell testing goes along. Not very well. IPv6 usage and defaults today One of the most recent example that Microsoft is using IPv6 can be found in the Azure Arc Agent (Connected Machine Agent) changelog: "Better handling when IPv6 local loopback is disabled" source: https://learn.microsoft.com/en-us/azure/azure-arc/servers/agent-release-notes How can I disable IPv6, if required? Many roads led to Rome. Windows + X > Terminal / PowerShell (Admin) #save current NIC config into a simple text file Get-NetAdapterBinding -ComponentID "ms_tcpip6" | where Enabled -eq $true | Out-File $env:temp\original-ipv6-config.txt #disable IPv6 on all adapters Get-NetAdapterBinding -ComponentID "ms_tcpip6" | where Enabled -eq $true | Disable-NetAdapterBinding And how to revert the change? Windows + X > Terminal / PowerShell (Admin) #enable IPv6 on all adapters (mind the text file) Get-NetAdapterBinding -ComponentID "ms_tcpip6" | where Enabled -eq $true | Enable-NetAdapterBinding TL:DR Microsoft is using fe80 addresses and loopback ::1 addresses for internal reasons. IPv6 is preferrably used over IPv4 when it is bound to a network adapter, including said special non- routable addresses. Please disable IPv6 temporarily, when you cannot patch this CVE immediately / in time. Take notes of current config. Please share the word and mind that disabling IPv6 can turn your OS into an outlier system, causing immediate or later issue due lack of testing by Microsoft or other software vendors, assuming the defaults, which is IPv6 being turned on.
PS script for moving clustered VMs to another node
Windows Server 2022, Hyper-V, Failover cluster We have a Hyper-V cluster where the hosts reboot once a month. If the host being rebooted has any number of VMs running on it the reboot can take hours. I've proven this by manually moving VM roles off of the host prior to reboot and the host reboots in less than an hour, usually around 15 minutes. Does anyone know of a powershell script that will detect clustered VMs running on the host and move them to another host within the cluster? I'd rather not reinvent this if someone's already done it.
Unable to Uninstall Security Update (KB5094128) on Azure Hosted Windows Server 2022 VM
Hi All, I'm building up a system on Azure of Windows Server 2022 VMs for a PoC. Each Windows Server 2022 VM has been created using a company hardened golden image. After configuring the VM successfully, I am unable to run a software. Through research, the solution to run the software is to uninstall 'Security Update for Microsoft Windows (KB5094128)'. The issue is that I cannot uninstall the update normally. I have looked up various solutions and the following have been unsuccessful: Attempt #1 Powershell (Admin): sfc /scannow wusa /uninstall /kb:5094128 Result: Error 0x800f0905. Attempt #2 Powershell (Admin): Dism /Online /Cleanup-Image /CheckHealth Dism /Online /Cleanup-Image /ScanHealth Dism /Online /Cleanup-Image /RestoreHealth wusa /uninstall /kb:5094128 Result: No corruption detected, error 0x800f0905. Attempt #3 Powershell (Admin): net stop wuauserv net stop cryptSvc net stop bits net stop msiserver ren C:\Windows\SoftwareDistribution SoftwareDistribution.old ren C:\Windows\System32\catroot2 catroot2.old net start wuauserv net start cryptSvc net start bits net start msiserver wusa /uninstall /kb:5094128 Result: All services started and stopped. Error error 0x800f0905. Attempt #4 Windows Update Troubleshooter: Running the windows update troubleshooter gives the following output. The event viewer is suggesting there is a corrupted file error, but as seen above nothing is wanting to remove that file. Does anyone have any other options they could suggest? Or has anyone had success with this issue before? Is it a lost cause as we have to use company hardened golden images? Any suggestions would be appreciated!Removal of old CA server stale data
Hi, I'm rebuilding some DC's and figured I'd tidy everything up before doing so as I've come into this with a messy environment. from this, I found an old Trusted Root CA, the certificate authority server was decommissioned in 2021 and all certificates have had an expiry date from 2021. its still being pushed out to domain devices such as servers and desktops. I tried running the 'certutil -dsdelca' command however this comes back with invalid command. I guess the best option is just to remove the class objects from the ADSI edit? as there is a class in AIA, CDP, Certification Authorities, KRA with the certificate name
Remote Desktop Web Audio Not Passing (Correctly)
Hello! I manage an RDS farm (WEB/GW, CB, DB, HST etc) at work, and it's been working great aside from Audio Passthrough. Clients will connect to the RD Website and then launch a remote app of their choosing. However, when the client is on the remote app PC and uses their audio (via an app or just using mmsys.cpl) the remote session will just freeze and be unusable. All RDS Infra is on at least Win. Server 2019+. All GPO Settings have been properly configured, as well as collection, CAP/RAP, and browser settings. I have confirmed launching RDP (mstsc.exe) session from my local laptop to the remote app PC (through the HST) does work without any issue, so I am led to believe there is something wrong with RD Web. RD Web Client Pkg is on the latest version. Any advice is greatly appreciated as I am banging my head against the wall trying to get it to work with RD Web. Cheers
Windows integrated CA - Certificates are not usable for any browser NET::ERR_CERT_INVALID
Hi all, a Windows integrated CA on Windows Server 2025. I have published web server certs on IIS (should be for Exchange on prem). Did this couple of times. But all Certificates released by this CA are not usable for any browser: NET::ERR_CERT_INVALID. Tried with different browser and different server. Cert is valid surely. root cert also in place. error detail: "normally uses encryption to protect your information. When Google Chrome tried to connect to localhost this time, the website sent back unusual and incorrect credentials. This may happen when an attacker is trying to pretend to be localhost, or a Wi-Fi sign-in screen has interrupted the connection. Your information is still secure because Google Chrome stopped the connection before any data was exchanged. You cannot visit localhost right now because the website sent scrambled credentials that Google Chrome cannot process. Network errors and attacks are usually temporary, so this page will probably work later." Any hints what is wrong? Thanks for hints GernotTSplus as an alternative to RDS without paying RDS license fees to microsoft
Hello, We are evaluating whether to use TSplus (https://www.terminalserviceplus.eu/) as an alternative to Microsoft RDS/Terminal Server. According to TSplus we can not install or uninstall the RDS role, so we do not use RDS CALs and use TSplus CALs. This way it would not be necessary to pay for Windows Remote Desktop licenses. Is this correct? I can't find any information from Microsoft about it reading documentation. As I see it is correct that using TSPlus without installing Microsoft RDS it would not be necessary to pay Remote Desktop licenses. Could someone confirm me that it is so?
How to check RDP access to the server
Hello, I have a virtual machine running Windows Server 2019 Datacenter with Active Directory, and all users access it via RDP. No specific access configurations have been set up; I wanted to know if it is possible to check how many times a specific user has connected and from which IP address—is that possible? Also, I wanted to ask if it is possible to determine whether a specific user copied files to their local PC using copy/paste during a session. Thank you
Users "Status" fields blank on RDS with Windows Server 2025
Hi, we have two RDS Server with Windows Server 2025 installed (In-Place Upgrade from Server 2019). In Task-Manager under the "Users" Tab all fields of the "Status" row are blank. We cant see if a user is connected or disconnected. In cmd with "query user" it works. Someone else discovered this problem?
