RemoteApp webclient launch failure

Question

hello,
I followed the instruction below to set up the remote web client access for wordpad.

https://learn.microsoft.com/en-us/windows-server/remote/remote-desktop-services/clients/remote-desktop-web-client

then, I am able to login http://hostname.com/RDWeb/webclient/,
when I clicked the published App 'wordpad',
it prompts to ask to Allow the remote computer to access
Clipboard Printer, I clicked Allow button, then I got the following error:

Oops, we couldn't connect to "WordPad"
The connection to the remote PC was lost. This might be because of a network connection problem. If this keeps happening, ask your admin or tech support for help.

There is no network issue, any suggestions?
thanks so much in advance.

Answer 1

Hi,
It is glad to hear that Chrome browser is working now. To figure out the specific error with Firefox, it seemed more traces and logs are needed, for which you are suggested to contact Microsoft Customer Support and Services for the in-depth investigation.

You may find phone number for your region accordingly from the link below:
Global Customer Service phone numbers
https://support.microsoft.com/en-us/help/4051701/global-customer-service-phone-numbers
Thanks,
Jenny

Answer 2

Hi,

1. What is the OS version running on the servers and clients? Do you involved WVD in the RDS deployment?

2.Kindly check if you could successfully open wordpad via RD web page in URL instead of RD web client.

3.Please check the prerequisites of "Set up the Remote Desktop web client for your users" as well as the known issue"What to do if the user can't connect to a resource with the web client even though they can see the items under All Resources"

https://learn.microsoft.com/en-us/windows-server/remote/remote-desktop-services/clients/remote-desktop-web-client-admin
https://learn.microsoft.com/en-us/windows-server/remote/remote-desktop-services/clients/remote-desktop-web-client-admin#what-to-do-if-the-user-cant-connect-to-a-resource-with-the-web-client-even-though-they-can-see-the-items-under-all-resources

4.Please check the RD Console Logs.txt to diagnose the issue further.

• Select the ellipsis in the upper-right corner and navigate to the About page in the dropdown menu.
• Under Capture support information select the Start recording button.
• Perform the operation(s) in the web client that produced the issue you are trying to diagnose.
• Navigate to the About page and select Stop recording.
• Your browser will automatically download a .txt file titled RD Console Logs.txt. This file will contain the full console log activity generated while reproducing the target issue.

Hope this helps and please help to accept as Answer if the response is useful.

Thanks,
Jenny

Answer 3

@Jenny Yan-MSFT
thanks. the OS server is windows 2019 server, os client is windows 10 using chrome browser, yes, I can open wordpad via rd web page, it will download a .rdp file and double click to open it.

I already followed the instructions and the certificate is set up correctly.

Here is the error log I got from web client, not sure if you can help find the cause?

2020-09-25T15:20:47.086Z Exception: Possibly unhandled rejection: backdrop click Cause: undefined
at Object.Logger.a.error (https://myhostname.com/RDWeb/webclient/js/client.194eecb6.js:1:3067),at https://myhostname.com/RDWeb/webclient/js/client.194eecb6.js:5:6851,at j (https://myhostname.com/RDWeb/webclient/js/components.35fcac4e.js:6:289),at n.$digest (https://myhostname.com/RDWeb/webclient/js/components.35fcac4e.js:6:6299),at https://myhostname.com/RDWeb/webclient/js/components.35fcac4e.js:6:8087,at Uc.b [as completeTask] (https://myhostname.com/RDWeb/webclient/js/components.35fcac4e.js:6:14224),at https://myhostname.com/RDWeb/webclient/js/components.35fcac4e.js:4:16482
2020-09-25T15:20:49.208Z RdpFileParser(NORM): Setting "redirectclipboard" = "1"
2020-09-25T15:20:49.228Z RdpFileParser(NORM): Setting "redirectprinters" = "1"
2020-09-25T15:20:49.229Z RdpFileParser(NORM): Setting "redirectcomports" = "0"
2020-09-25T15:20:49.229Z RdpFileParser(NORM): Setting "redirectsmartcards" = "1"
2020-09-25T15:20:49.229Z RdpFileParser(NORM): Setting "devicestoredirect" = ""
2020-09-25T15:20:49.229Z RdpFileParser(NORM): Setting "drivestoredirect" = ""
2020-09-25T15:20:49.229Z RdpFileParser(NORM): Setting "redirectdrives" = "1"
2020-09-25T15:20:49.229Z RdpFileParser(NORM): Setting "session bpp" = "32"
2020-09-25T15:20:49.229Z RdpFileParser(NORM): Setting "prompt for credentials on client" = "1"
2020-09-25T15:20:49.229Z RdpFileParser(NORM): Setting "span monitors" = "1"
2020-09-25T15:20:49.229Z RdpFileParser(NORM): Setting "use multimon" = "1"
2020-09-25T15:20:49.229Z RdpFileParser(NORM): Setting "remoteapplicationmode" = "1"
2020-09-25T15:20:49.229Z RdpFileParser(NORM): Setting "server port" = "3389"
2020-09-25T15:20:49.229Z RdpFileParser(NORM): Setting "allow font smoothing" = "1"
2020-09-25T15:20:49.230Z RdpFileParser(NORM): Setting "promptcredentialonce" = "0"
2020-09-25T15:20:49.230Z RdpFileParser(NORM): Setting "videoplaybackmode" = "1"
2020-09-25T15:20:49.230Z RdpFileParser(NORM): Setting "audiocapturemode" = "1"
2020-09-25T15:20:49.230Z RdpFileParser(NORM): Setting "gatewayusagemethod" = "0"
2020-09-25T15:20:49.230Z RdpFileParser(NORM): Setting "gatewayprofileusagemethod" = "1"
2020-09-25T15:20:49.230Z RdpFileParser(NORM): Setting "gatewaycredentialssource" = "0"
2020-09-25T15:20:49.230Z RdpFileParser(NORM): Setting "full address" = "myhostname.com"
2020-09-25T15:20:49.230Z RdpFileParser(NORM): Setting "alternate shell" = "||wordpad"
2020-09-25T15:20:49.230Z RdpFileParser(NORM): Setting "remoteapplicationprogram" = "||wordpad"
2020-09-25T15:20:49.230Z RdpFileParser(NORM): Setting "remoteapplicationname" = "WordPad"
2020-09-25T15:20:49.230Z RdpFileParser(NORM): Setting "remoteapplicationcmdline" = ""
2020-09-25T15:20:49.230Z RdpFileParser(NORM): Setting "workspace id" = "myhostname.com"
2020-09-25T15:20:49.230Z RdpFileParser(NORM): Setting "use redirection server name" = "1"
2020-09-25T15:20:49.230Z RdpFileParser(NORM): Setting "loadbalanceinfo" = "tsv://MS Terminal Services Plugin.1.romote-app"
2020-09-25T15:20:49.254Z [SessionFactory] Redirections request
2020-09-25T15:20:50.513Z [ConnectionFactory] Creating connection to:
2020-09-25T15:20:50.513Z [object Object]
2020-09-25T15:20:50.545Z RdClientConnectionProxy::Create(NORM): loading webworkers from path: https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js
2020-09-25T15:20:50.560Z WebWorker(NORM): Created Webworker with path: https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js onMessage: HandleConnectionMessage
2020-09-25T15:20:50.686Z TLS::EnsureOSSLSeeded(NORM): A seed of 256 bytes has been provided for OSSL
2020-09-25T15:20:50.979Z [SessionProvider] Connection created event received.
2020-09-25T15:20:50.979Z [SessionFactory] Launching remote app: ||wordpad
2020-09-25T15:20:50.979Z [Connection] Rail is not active adding application to pending list: ||wordpad
2020-09-25T15:20:50.979Z [SessionProvider] Session created received in provider
2020-09-25T15:20:50.980Z [SessionViewModel] Session created event received for: e22b8f9c-7dac-4c08-94fc-3345dfd4516b
2020-09-25T15:20:50.980Z [Connection] Connection.connect called
2020-09-25T15:20:50.980Z [SessionViewModel] Received monitorBound event on UI layer
2020-09-25T15:20:51.023Z [Session] Session focus changed to true id:e22b8f9c-7dac-4c08-94fc-3345dfd4516b window id:null
2020-09-25T15:20:51.023Z [SessionViewModel] Session focused event received in view model session id: e22b8f9c-7dac-4c08-94fc-3345dfd4516b
2020-09-25T15:20:53.803Z Connection(NORM): Connection created with correlation ID={94627a73-2772-4d5a-8a1d-598e433a0000}
2020-09-25T15:20:53.924Z DVCManager(NORM): Registered plugin DisplayControlGraphicsPlugin
2020-09-25T15:20:53.926Z DVCManager(NORM): Registered plugin InputPlugin
2020-09-25T15:20:53.946Z DVCManager(NORM): Registered plugin GfxChannelGraphicsPlugin
2020-09-25T15:20:54.178Z Connection(NORM): Using WebSocket Protocol wss
2020-09-25T15:20:54.197Z DVCManager(NORM): Creating plugin DisplayControlGraphicsPlugin
2020-09-25T15:20:54.207Z DVCManager(NORM): Registering a listener for DVC Microsoft::Windows::RDS::DisplayControl
2020-09-25T15:20:54.208Z DVCManager(NORM): Creating plugin GfxChannelGraphicsPlugin
2020-09-25T15:20:54.295Z DVCManager(NORM): Registering a listener for DVC Microsoft::Windows::RDS::Graphics
2020-09-25T15:20:54.307Z DVCManager(NORM): Creating plugin InputPlugin
2020-09-25T15:20:54.315Z DVCManager(NORM): Registering a listener for DVC Microsoft::Windows::RDS::Input
2020-09-25T15:20:54.323Z WebSocketTransport(NORM): Connection process begun for url=wss://myhostname.com:3392/rdp
2020-09-25T15:20:54.360Z [Connection] Connection state changed to: Opening remote port
2020-09-25T15:20:54.360Z [SessionViewModel] Session e22b8f9c-7dac-4c08-94fc-3345dfd4516b changed canvas display to none
2020-09-25T15:20:54.452Z WebSocketTransport(ERR): WebSocket error received for url=wss://myhostname.com:3392/rdp
websockettransport.cpp(304): OnErrorFromJS()
at Object.Logger.a.errorWithoutTimestamp (https://myhostname.com/RDWeb/webclient/js/client.194eecb6.js:1:2855),at Function.<anonymous> (https://myhostname.com/RDWeb/webclient/js/client.194eecb6.js:5:7952),at methodCaller_emscripten$$val_$emscripten$$val_emscripten$$val$ (eval at new_ (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:86:1499616), <anonymous>:6:26),at __emval_call_method (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:86:1521150),at I$a (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:95:713702),at ujd (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:99:283347),at invoke_viiiii (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:86:1572907),at H$a (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:95:712115),at sjd (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:99:283181),at invoke_viii (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:86:1572497),at x0a (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:95:751280),at Hfb (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:97:365174),at qjd (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:99:283050),at invoke_vii (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:86:1572108),at s1a (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:95:788476),at qjd (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:99:283050),at invoke_vii (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:86:1572108),at t1a (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:95:789288),at sjd (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:99:283181),at dynCall_viii_471 (eval at makeDynCaller (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:1:1), <anonymous>:4:12),at OnMessageCallback$Invoke [as Invoke] (eval at new_ (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:86:1499616), <anonymous>:9:1),at Worker.<anonymous> (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:86:106254)
2020-09-25T15:20:54.465Z WebSocketTransport(NORM): WebSocket closed, url=wss://myhostname.com:3392/rdp, wasClean=false, code=1006, reason=""
2020-09-25T15:20:54.548Z Connection(ERR): The connection generated an internal exception with disconnect code=ConnectionBroken(8), extended code=<null>, reason=WebSocket closed with code: 1006 reason:
Thrown in thread 399776 at:
websockettransport.cpp(330)
Call Stack:
at _lb
at Xlb
at Tp
at ujd

connection.cpp(1333): OnException()  

at Object.Logger.a.errorWithoutTimestamp (https://myhostname.com/RDWeb/webclient/js/client.194eecb6.js:1:2855),at Function.<anonymous> (https://myhostname.com/RDWeb/webclient/js/client.194eecb6.js:5:7952),at methodCaller_emscripten$$val_$emscripten$$val_emscripten$$val$ (eval at new_ (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:86:1499616), <anonymous>:6:26),at __emval_call_method (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:86:1521150),at I$a (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:95:713702),at ujd (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:99:283347),at invoke_viiiii (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:86:1572907),at H$a (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:95:712115),at sjd (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:99:283181),at invoke_viii (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:86:1572497),at x0a (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:95:751280),at Hfb (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:97:365174),at qjd (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:99:283050),at invoke_vii (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:86:1572108),at s1a (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:95:788476),at qjd (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:99:283050),at invoke_vii (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:86:1572108),at t1a (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:95:789288),at sjd (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:99:283181),at dynCall_viii_471 (eval at makeDynCaller (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:1:1), <anonymous>:4:12),at OnMessageCallback$Invoke [as Invoke] (eval at new_ (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:86:1499616), <anonymous>:9:1),at Worker.<anonymous> (https://myhostname.com/RDWeb/webclient/js/rdcore.2d28f0f1.js:86:106254)
2020-09-25T15:20:54.570Z [Connection] Disconnecting
2020-09-25T15:20:54.582Z WebSocketTransport(NORM): Connection close initiated for url=wss://myhostname.com:3392/rdp, code=1000, reason="NormalClosure(1000)"
2020-09-25T15:20:54.586Z [Connection] Disconnected
2020-09-25T15:20:54.588Z [SessionViewModel] Received retireCanvas event on UI layer, connectionID=94627a73-2772-4d5a-8a1d-598e433a0000
2020-09-25T15:20:54.588Z [SessionProvider] Session disconnect received in provider
2020-09-25T15:20:54.588Z [SessionViewModel] Received didDisconnect event on UI layer
2020-09-25T15:20:54.589Z [Connection] Cleaning up connection
2020-09-25T15:20:54.590Z [SessionProvider] Connection destroyed event received.
2020-09-25T15:20:54.590Z [SessionProvider] Session disconnect received in provider
2020-09-25T15:20:54.590Z [SessionViewModel] Received didDisconnect event on UI layer
2020-09-25T15:20:54.593Z WebWorker(NORM): Destroying Webworker
2020-09-25T15:20:54.644Z [SessionViewModel] Canvas lost focus

Answer 4

Hi,

Thanks for sharing the logs. It appeared the error was:
2020-09-25T15:20:54.465Z WebSocketTransport(NORM): WebSocket closed, url=wss://myhostname.com:3392/rdp, wasClean=false, code=1006, reason=""
2020-09-25T15:20:54.548Z Connection(ERR): The connection generated an internal exception with disconnect code=ConnectionBroken(8), extended code=<null>, reason=WebSocket closed with code: 1006 reason:

1.Kindly go and check if any configuration has been set in firewall to deny WebSocket. Also check the status of port 3392, whether or not it is occupied by other services.

2.There is a similar thread which finally resolved by repairing fiber connection.
https://social.technet.microsoft.com/Forums/en-US/ea5de19e-7b9d-466a-b1c7-24e275acc93e/issues-with-html-5web-cient?forum=winserverTS

Hope this helps and please help to accept as Answer if the response is useful.

Thanks,
Jenny

Answer 5

@Jenny Yan-MSFT
I just disabled the firewall in the server. still have the same issue.
also, I checked port 3392, it is used by rdp only.
I checked the thread. It talks about the solution to configure the router. however, my windows virtual desktop is hosted by microsoft azure, there is nothing I can do about it. any other ways to try?