I know there are more articles of this on the internet i think i found them all but still cant solve my problem for the client PC's.
i have a windows forms project installed on a server that every client PC's useses. I added the reference 2 my project and installed the EwsManagedApi on my own computer for testing and changed the location of where 2 find the references to the folder that EwsManagedApi installs.
When i am trying to use the module that uses the Exchange Web Services i get the error.
I only have the shotcut on my pc and the application is running good. i know the reference path is good i checked this more than 5 times. but when i just copy the dll to my folder where the shortcut is it is working good. what do i have to do to get the dll from the server where the aopplication is installed.
Tanx
You have to install the Microsoft Exchange WebServices API 2.0 in every client
to be sure you have all the necesary assemblies.
Microsoft Exchange Web Services Managed API 2.0
In addition, check out the the server version. Maybe it is 64 bits and the
clients are running 32 bits.
Related
I've download Visual Studio 2022 and tested the default Blazor Server template (Home/Counter/FetchData). In Visual Studio, IIS Express I can open as many tabs / instances of the application as I want.
When I host the default Blazor Server template in local IIS (Windows 10 Home 21H2, IIS 10) I can only open three instance of the application. The fourth will hang until the first is closed. I see someone has ran into nearly the exact same issue but there is no solution provided.
Anyone know whats going on? I don't understand why IIS Express can handle multiple instnaces but IIS 10 can not. Even Conveyor by Keyoti can support many many tabs compared to IIS 10.
Note: I notice SignalR has limitations on Windows / IIS of 10 concurrent connections, but I'm not even getting two.
Updates
Out of curiosity I tested it on Windows Server 2016 Standard and I can open hundreds of tabs.
I re-installed IIS on Windows 10 to make sure something wasn't wacky.
I've ensured WebSocket Protocol is enabled.
Windows 10 Home supports 3 concurrent connections at the same time, according to Microsoft.
Normal HTTP requests to IIS get process and response returned. So even if you manage to achieve 4 or more at the same time, IIS will work through the request queue and you may not have noticed that your request was slightly delayed unless your individual requests take a while to process.
However with SignalR, a persistent connection is maintained to the server. So if you open one connection per browser tab, and you have 4 tabs open, that 4th tab is going to hang indefinitely until one of the other page has its connection ended (by closing the tab, manually disconnecting via code, or refreshing the page).
I can't reproduce the issue, and I have tried to search some way to solve it.I will summarize a few ways below that you can try.
Try to install Websocket Protocol in your Win10. You can find it in Windows features.
Workaround: install IIS Express in Web Platform Installer.
Workaround: Try to deploy it in windows server, and check whether have same issue. I found some posts also mentioned it may related with OS version.
The solution was incredibly simple (maybe too simple?). Don't use IIS at all.
In Program.cs just before building the app I override Kestrel ports to listen on any ip (for now).
(Optional) I provide a custom SSL certificate in the UseHttps constructor so that it can be emailed and installed on iOS and Android devices.
(Required) Then I publish the applications to a folder and just run the .exe on the hosting machines.
Program.cs
builder.WebHost.ConfigureKestrel(opt =>
{
opt.ListenAnyIP(8000);
opt.ListenAnyIP(8001, listOpt =>
{
listOpt.UseHttps(#"Path to.pfx file", "password for pfx file");
});
});
Now Windows 10 Home can support as many connections as the hardware can handle at https://192.168.0.XXX:8001. Is this how Blazor Server is expected to be deployed within a local network? I don't understand how this overcomes the connection limit pointed out in masons answer. Please let me know in the comments if I'm missing something.
I have .net framework 4.8 web site deployed on IIS 10. And It's pool stops on every first request after each start.
Here is the list of programs and features on server:
Programs and features
In Application Windows log I found 10 errors per each request. Everyone error is:
The Module DLL C:\Windows\system32\inetsrv\aspnetcore.dll failed to
load. The data is the error.
And in System log I have warning:
A listener channel for protocol 'http' in worker process '2968' serving application pool '{MyPoolName}' reported a listener channel failure. The data field contains the error number.
With binary data in details tab: In Words 0000: 8007007E
I tried to repair installed version of .net 5. Also tried to install .net framework 4.8, but installer didn't allow to do it because of:
.NET Framework 4.8 or a later update is already installed on this
computer.
I even tried to create site with empty directory. When I create one on my computer it shows "403.14 — Forbidden" as it should. But after doing the same on server empty site pool stops as my site's pool.
Have you ever faced such a problem? I have no idea how to fix it!
I have .net framework 4.8 web site deployed on IIS 10. And my IIS pool stopped on first request. Researching similair issues I found this artcle on the Microsoft Monitoring Agent APM service. This service was disabled, I removed the Microsoft Monitoring Agent APM as it was not being used. My application now successfully launches.
https://kevingreeneitblog.blogspot.com/2017/03/scom-2016-agent-crashing-legacy-iis.html
Thank you for your help. I solve the problem with complete reinstallation of server OS and components. My consider is that the problem was into iis or OS component.
I recently developed a windows phone application using phonegap(HTML5, CSS) in visual studio and generated the deployable XAP file. When I registered my device with my developer account I was able to install my application locally and was able to do server communication as well. But when I submit the same XAP file to store and then download from store, the server communication is failing. As this issue is observed only at store I am not able to debug the issue.
My question is how can the same application show different behaviours when deployed locally & downloaded from store.
Note: I am doing ajax requests for server communication.
Please let me know if some permissions need to be given while submitting to store or any work around needed from me to fix this issue. Requesting a response soon.
Greetings,
we have to following problem.
Our application is deployed using ClickOnce. Everything is running fine and application is able to connect to the wcf service. The problem occurs when application is installed on FRESH XP machine without .net Framework and Windows Installater (that were selected in ClickOnce prerequities).
Application downloads .NET Framework 3.5SP1 and windows installer but then it cannot connect the the server. Reboot after install does not help.
The strange is that this application has been installed on 10 xp machines and 4 of them can connect to the service without a problem
Are there any dlls referenced in your application? You might want to check them (Under project's Properties\Publish tab\Application Files button) see if you missed to include the needed dlls or files.
alt text http://www.freeimagehosting.net/uploads/e8ff221e20.jpg
We ran into this and were forced to reinstall .net on some machines no idea why though.
This is a shot in the dark but have you tried depends.exe and see if it can profile what is happening.
Also Take a look at this blog and get a crash dump and see if you can use it to at least tell you what is complaining the loudest.
What do you mean when you say 'cannot connect to the server'?
a. The machine cannot connect to the install location and therefore the clickone app is not installed?
b. The app installs (along with the pre-requisites) and starts fine. Then it is unable to connect/communicate with your WCF services.
I presume (b) I just wanted to clarify.
What happens when you ping the machine the services are on from one of the failed install machines? Also what happens when you put the service url into a browser on one of the failed install machines? Can you see the wsdl?
Obviously your deployment package works because it works on those other machines (I assume it IS the same package all machines are installing?), therefore I doubt you are missing any dll's as a ClickOnce app should include all dll's it needs (sometimes you do need to tell ClickOnce explicitly to include).
Last question is, when the app tries to call the service, exactly what exception is it getting back?
I just remembered something which has caught me out in the past with some machines being unable to connect but others can...especially 'new' machines.
Check this file:- C:\WINDOWS\system32\drivers\etc\hosts
Check the contents on a machine that works and one that doesn't. We have some IP to machine name mapping going on that on new machines is not set and so the new machines cannot find the servers.
We are creating a WCF service with a companion client DLL (.Net) that we will be delivering to a user's GAC via a web page. The DLL knows how to communicate with and how to interface with the service, and will allow the web page to communicate with the WCF service via client-side Javascript calls. The user's machine will be executing the DLL's functionality, not the server. With it data will be transferred to the target server.
This works in theory (and practice) over our internal network. The network is, of course, in a trusted zone so there are no problems with delivery, GAC install and DLL utility. The client-server pair works as expected. We can download the .Net DLL with an object tag, install it in the GAC and use it easilly.
In order for an internet user to be able to download the client .Net DLL however there are security procedures that need to be put in place. We do not have the expertise yet to know exactly what they are, but we are aware that we will need to at least sign the DLL with a trusted certificate. Beyond that, we are unsure.
The question then is what do we do from here?
Give the assembly a strong name (sn.exe - etc)
Create a Windows Installer Project from Visual Studio that will add your custom assembly to the target machine's GAC. (Right click File System on Target Machine | Add Special Folder | Global Assembly Cache folder). Let users download your installer from your web page, probably the most painless way instead of forcing something via the browser.