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The RD Session Host server received large number of incomplete connections. The system may be under attack.

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Hello,

When working remotely from home, users recently encountered a remote connection error to their computers: "Internal error occurred."

In Event viewer: The RD Session Host server received a large number of incomplete connections. The system may be under attack.

After searching the web and finding no way, I turn to you for help

Thanks in advance


RDS shadow capabiltiy

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i have a very functional RDS environment.  1 vm running gateway, broker, and licence.  Two vm's running session host servers.  Both the session host servers have NVIDIA Tesla cards directly attached.  I'm trying to shadow the users by right clicking on the connections from server manger.  It displays the RDS client like it's going to connect but it never does.  It does prompt the user if i request it.  If i try it again right away it prompts an error that a shadow session has already begun. 

I've edited the local group policy of the session host server to allow shadowing, and I've check the user permissions in  AD to allow remote control.

 

IT guy

RDS 2019 RemoteApp AAD Joined Win10 credential issue

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Greetings,

I'm looking to migrate an old RDS infrastructure to a more modern one. For this project we would like to dissociate notebook clients from the Internal AD and use Azure AD for them. I'm running in an issue with what seems to be the credential delegation part of the RDP connection. I am being prompted the user password when launching the application. If I type in type password the application launch just fine. 

I have followed these guidelines and defined "TERMSRV/*" in my delegation policy for diag purpose:

https://docs.microsoft.com/en-us/archive/blogs/mrsnrub/remote-desktop-services-websso 

My AAD Joined Windows 10 session is able to access protected Shares from my local AD without having to do anything.

The same RDS setup accessed with an AD Joined Win10 (same version, image from Azure) works properly, the credential delegation works on this setup, the password is not being requested. I have also forced the use of the RDS Gateway so that the AD client would use the same path as the AAD one.

This threads hints that it should have worked. Note that I'm not looking for the full SSO experience, just not having to enter the password when launching different applications.

https://social.technet.microsoft.com/Forums/en-US/710eca14-e2f3-45e4-a6c8-734915f83b7b/rdweb-sso-experience-with-azure-ad-join-clients?forum=winserverTS

I'm basically looking for pointers on where to look at, is there any traces that can be enabled that would give a reason to why the credential are not being pushed. Am I trying to do something that should not work?

Thanks for your input,
Dominic

use local network interface on remoteapp???

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We have a connection software published as remoteapp that obviously does not work when we launch the VPN on the client computer since the connection is made from the remoteapp server.

Would there be a way for remoteapp to use the local network card?

Thanks!!!

How to change password in RDP session

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In my situation all RDP clients are remote over the internet. their passwords expire every 60 days. How can the user change their password before it expires? CTRL ALT DEL will not work because it takes you to a password change on your local machine. Note the users have no access to a desktop only a single application is forced to run through the user profile.

Lee

Allow non-administrators logon /admin mode (console)

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Hello,

I can`t find how to allow not administrators to logon using "mstsc /admin". Is it possible?

Thank you.

Integrating Remote Desktop Gateway infrastructure using the Network Policy Server (NPS) extension and Azure AD

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Hello

We are moving to integrate our on-premise RDS gateway with Azure (cloud based deployment) AD and the NPS extension. This looks straight forward enough but we are uncertain on the Azure licensing required. Clients currently haveMicrosoft 365 Apps for Enterprise licenses. According to a recent article, MS reckons you needAzure P1 for per user but this appears excessive considering they have MFA already. So the question is, does Microsoft 365 Apps for Enterprise include P1 licenses for this service? Or are Microsoft 365 Apps for Enterprise compatible with this service? 

Thanks in advance 

MIS5000

how to notice Licencing error in windows

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I am working on a project about how to detect licencing error in RDP. I have already studied RDP standard and then tried to write a program to read all packet data transferred from port 3389. At first I had plan to work on security header to see when licencing error flag is sending by server but as in windows all messages after primary negotiation are sending according to TLS protocol I changed program to consider TLS records as another solution to see whether alert record is sending or not. I tested my program in various windows version such as 7, 8 and 10 but I do not know why it sometimes is not sent. As you know all data will be encrypted after TLS handshaking I do not know how I can recognize when licencing error are happening. I know some of software are doing this work like RDPguard but I do not know from which protocol they are utilizing. I am wondering if you can help me to solve this problem.
Thank you in advance for your help and time

Users frequently disconnect from Remote Desktop Session Host

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Hello,

We are running six Remote Desktop Session Hosts (RDSH) all on Windows Server 2016, version 1607, OB Build 14393.3659.

About a week or so ago, we noticed that our users are mass disconnecting from our RDSHs. On their end, it tries to automatically reconnect and is usually successful. But we don't know why they are mass disconnecting in the first place.


There is no pattern to when they disconnect. It can be once a day or six times a day and is extremely frustrating to our users (and us). We thought that maybe our GPOs are in a sort of combination that causes the users to disconnect at refresh but the disconnects don't happen every 90 minutes. We checked the event viewer in each server in our RDS environment, and found absolutely no hints or clues. Users that use our VPN, instead of RDS, works fine and no disconnections there. The servers aren't restarting themselves either. It just does a mass drop whenever it feels like and we have no idea what is causing it.

Does anyone have any recommendations on where to look to see what could be causing this?

RDS Virtual Desktop Collection showing unknown status.

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Hi Everyone,

I got a strange issue with RDS environment, On one fine morning , we are not able to view the pooled managed collections under collections tree, however if we click on collection you can see it as unknown( below screenshot ). I am able to manage other pooled collection apart from one with 140 VMs with the help of PowerShell. Apart from this everything is running as it should be , however now we are not able to manage it and this is major problem that we are not able to manage settings. 

This checked till now.

1.       All Pooled Managed VDIs are showing unknown.

2.       Only  One Pooled Managed Collection having issue.

3.       Collections are working and behaving normally, Only one Collection with 140 VMs having issue while updating the collection and rest of the collection are accessible and working fine from command line.

4.       No changes in RDSCB SQL database, no job are pending to execute in DB as well.

5.       No Major events related to VDI connection broker.

Getting Below error while managing with powershell.

New-Object : Cannot convert argument "2", with value: "", for "RDVirtualDesktopCollectionJobStatus" to type "System.DateTime": "Canno
t convert null to type "System.DateTime"."
At C:\Windows\system32\WindowsPowerShell\v1.0\Modules\RemoteDesktop\VirtualDesktopCollection.psm1:2167 char:22
+         $jobStatus = New-Object  Microsoft.RemoteDesktopServices.Management.RDVi ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [New-Object], MethodException
    + FullyQualifiedErrorId : ConstructorInvokedThrowException,Microsoft.PowerShell.Commands.NewObjectCommand


RDWeb - HTML client works for only 2/3 session hosts in the farm!?

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Hi All,

My RDS Farm setup is setup as follows...All servers are Windows Server 2019 STD.

Office Subnet...

  • RDSCBLS - Connection Broker, Licensing Server roles installed.
  • RDSWEBGW - RDS Gateway, RDWeb Server roles installed.
  • RDSSH01 - RDSSession Host role installed - RDP server for users to RDP into the office network.
  • RDSSH02 - RDSSession Host role installed -  RemoteApp host server hosting 2 remote apps

DMZ Subnet...

  • RDSSH03 - RDSession Host role installed - RDP server for users to RDP into the DMZ network.

The "legacy" RDWeb portal works a treat, everything connects and my users can work 100%.

Yesterday I decided to install the new HTML Client. I successfully installed version 1.0.21.0

I can successfully connect to the RDSSH01 & RDSH02 resources but not the RDSSH03 resource. I get a certificate error...

The Connection Broker certificate is trusted and successfully imported, RDSH01 launches a full RDS desktop 100%, RDSH02 launches it's RemoteApps 100%, but RDSH03 persists on giving me this error!?

What have I tried?

  • Entirely cleared browser cache, history and cookies - no dice!
  • Tried an entirely new never before installed browser - no dice!
  • Change the HTML Client settings from "Open resources in the browser" to "Download the RDP file" - this works!

The certificate in the error is not the connection broker certificate, it is the local self signed "Remote Desktop" certificate on the RDSH03 session host server underCert:\LocalMachine\My\Remote Desktop certificate store.

Additionally and this may be a bug - the cert is NOT an SHA1 certificate it is SHA2.

Any ideas how I can fix this as the neatly web page packaged RDS resources in the HTML client are exactly what my users are wanting...nice neat single pane of glass overview of ALL their RDS resources.




Windows Search service cannot start - The handle is invalid

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Hi

Suddenly the Windows Search service cannot start anymore - May have been after a reboot last night. No updates seem to have been installed.

Server is 2019 1809 17763 - With Remote desktop session host.

The Windows Search service terminated with the following error:
The handle is invalid.

Error 6

I have tried to uninstall the Windows Search service feature, but then users Outlook search is not working very well, right not it does not either. But it using online search and not local index database.

Reinstall did not fix the issue.

Any ideas how to troubleshoot?

/Kim

Adding camerastoredirect:s: to customerRDP file for windows 2012 R2

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Hi Guys,

I am trying to get camera to redirect. I have confirm the VDI Desktop is good, and the Client is good. The issue looks to be the VDI RDP configuration file.

I have read that you need to add camerastoredirect to the customerRDP. Yet I cannot find a method to get this working. Every method I try fails. 

I have tried, Set-RDVirtualDesktopCollectionConfiguration -customerRDPProperty 

Also editing the Regedit Location "RDPFileContents", using both note pad and powershell script. Both of these fail. 

What I was wondering is if Windows 2012 R2 supports the camerastoredirect. Can someone confirm this or let me know if I need to upgrade the session how server, or Broker?

Thanks

Craig 


Craig G

Remote Desktop Mobile open app?

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I've installed Remote Desktop Mobile on my iPad and can access my cloud server with no issue.  However, rather than landing on the desktop and then launching an app, is it possible to configure the RDM client to automatically open the app?

Thanks!

Ken

VDI Webcam and performance

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Hi All,

Hoping someone can confirm performance usage for using Webcam and VDI. 

The VDI setup we have 3 servers.  

Windows 2012 R2 VDI server

ProLiant DL360 Gen9

Intel(R) Xeon(R) CPU E5-2690 v4 @ 2.60GHz x 2

 Windows 10 Desktop VDI desktops with 8 VCPU 6GB Ram.

 Lenovo ThinClients with duel core 1.8 

I have setup the webcam to run through the VDI using the WebRTC service on the windows 10 VDI. (Anyone know if the WebRTC is similar to the Citrix HDX). Everything is working as expect. The Video is relatively smooth and audio is fine. Not as good as on your desktop but close enough.

What we find is that the CPU usage is running at about 30% CPU on each of the 8 CPU, which I calculate at about 4% 5% of server CPU. That would mean that 20 user on Webcam would fully load the server. So at max you could only have 10 user. We have 60 user per VDI.

What I would like to know is if that is the expect CPU usage? Is there a way to reduce the CPU usage? Does the Citrix HDX reduce the CPU usage on the VDI. 

Thanks for your time.

Craig 


Craig G


Windows RDS 2012 - Single sign-on using Firefox or Chrome when launching RemoteApp from RDweb

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Hi

I have deployed RDS integrally on Windows Server 2012. This is my deploymnet:

RDweb01 - RD Web access and gateway - Let's say "rdweb.contoso.com"

RDCBroker01 - Connection Broker in HA mode using a certificate signed by a public trust CA. We have just one Broker. The HA mode is only to be able to use the certificate. Let's say "rdfarm.contoso.com"

RDSHost01 and RDSHost02 - RD Session host.

I have several RemoteApp publishd through RDWeb. It's just IE pointing to different web sites.

When the users are using IE evrything works fine. No warnings and SSO works. The users log on to rdweb.contoso.com and then they are able to launch any RemoteApp without being asked for credentials, i.e. SSO works fine.

The problem is when using Firefox or Chrome. Then the users are asked for credentials when launching any RemoteApp. It seems the request comes from the broker. Since I can see the address rdfarm.contoso.com in the credential window.

The question is if SSO is supposed to work on non-IE browsers and if so HOW?

Thanks in advanced.

X_Admin Account

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We noticed on some of our RDS servers there is an account called "X_Admin". We are running Windows 2019. Anyone know what this account is and/or used for?

Cannot redirect microphone through to 2019 RDS server

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We're trying to pass through microphone input from a client to a 2019 server with the remote desktop session role installed.

Clients can connect to windows 10 computers and microphone works okay.

The server in question has "audio recording" enabled on the RDS host. The group policy (allow audio recording redirection) is set to enable. The fDisableAudioCapture is set to 0 (This is the group policy setting key anyway). The audio service is started in the services list.

The audio devices do show up in the client session.

We are setting the client to send audio, and confirmed this works with a windows 10 as the host.

Also installed a fresh 2019 server with RDS role to test with no luck either.

Server 2016 RDS connections maxing out and crashing dwm.exe?

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We attempted a stress load on our server and found users unable to join. The RDS would blackscreen and drop. It happened after 8 users had joined. The performance also was dropping as each connection stacked and after we saw the Event Viewer had 450+ Critical Error 1000 with dwm.exe dwmcore.dll crashing.

HP Dl380 Gen9

2x Xeon E5-2697 v3

192GB Ram

Nvidia Quadro M6000 24GB (Current Driver) RemoteFX enabled

Windows Server 2016

Bare-Metal RD Terminal Sessions

We currently have a similar environment with 2012R2 without a problem,

Webcam Redirection not working, RDS 2016, RemoteFX, usbdevicestoredirect

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hi,

we have a large RDS 2016 Farm and want to enable Webcam Redirection. We are not using HyperV but VMWare. The RDS 2016 Farm is in High Availabilty Mode, making use of all Server Roles (weacess, connection broker, sessions hosts, ...).

-RemoteFX Redirection is enabled per GPO

*Allow RDP redirection of other supportedremotefx USB devices from this computer/Y

*Do not allow supported Plug and Play device redirection/N

*Enable RemoteFX encoding for RemoteFX clients designed for Windows Server 2008 R2 SP1

-Additionally we ran:

Set-RDSessionCollectionConfiguration -CollectionName Test –CustomRdpProperty “usbdevicestoredirect:s:{6bdd1fc6-810f-11d0-bec7-08002be2092f }”

Set-RDSessionCollectionConfiguration -CollectionName Test –CustomRdpProperty “usbdevicestoredirect:s:{6bdd1fc6-810f-11d0-bec7-08002be2092f}”

Set-RDSessionCollectionConfiguration -CollectionName Test –CustomRdpProperty “usbdevicestoredirect:s:*”

Remote Audio and Remote microphone are working, however, Remote Webcam is not working.

Any Input is highly appreciated

thanks!

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