I have created an OData/WCF service using Visual Studio 2010 on Windows XP SP3 with all current patches installed.
When I click on "view in browser", the service opens and I see the 3 tables from my EF model. However, when I add a table name ("Commands" in this case) to the end of the query string, rather than seeing the data from the table, I get an HTTP 500 error.
(This error (HTTP 500 Internal Server Error) means that the website you are visiting had a server problem which prevented the webpage from displaying.).
I have not only followed the examples from 2 sites, but have also tried running the sample application that the blog poster sent me (that works on his machine), and still am not having any luck.
The blog post is at Exposing OData from an Entity Framework Model
Does anyone have an idea why this is occurring and how to resolve it?
Here is the output of the "View in Browser":
<?xml version="1.0" encoding="utf-8" standalone="yes" ?>
- <service xml:base="http://localhost:1883/VistaDBCommandService.svc/" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:app="http://www.w3.org/2007/app" xmlns="http://www.w3.org/2007/app">
- <workspace>
<atom:title>Default</atom:title>
- <collection href="Commands">
<atom:title>Commands</atom:title>
</collection>
- <collection href="Databases">
<atom:title>Databases</atom:title>
</collection>
- <collection href="Statuses">
<atom:title>Statuses</atom:title>
</collection>
</workspace>
</service>
Update:
In an effort to get this working, I have:
Removed and re-installed IIS
Ran the %WINDIR%\Microsoft.Net\Framework\v4.0.30319\aspnet_regiis –i –enable command
Ran the %WINDIR%\Microsoft.Net\Framework\v4.0.30319\ServiceModelReg.exe -r command.
Created a new solution and followed the instructions very carefully to assure that I
didn't mess anything up.
After all of this, I am still getting the same HTTP 500 error, with no entries of any kind in the Event Viewer.
Any other ideas?
I figured out that my problem was an issue with opening the database. The way I figured it out was to add the following to the servicename.svc.cs file in the InitializeService method:
config.UseVerboseErrors=true;
Thanks to all who tried to help.
Eric
config.UseVerboseErrors=true; helped me in finding out the problem. The problem was I was using windows authentication for database connection. After changing to SQL Server Authentication everything worked fine.
Please try these debugging tips to see the actual error which happened:
Link
500 always means there was an unhandled exception in the service. Go look in the windows event log to see what that error was.
Received similar output with VS2013:
Resolved by upgrading the Entity Framework.
See answer https://stackoverflow.com/a/21028123/2116188.
You can also activate Failed Request Tracing for your Web Application in IIS
then you will get detailled trace execution in Xml files from IIS when a 500 error occurs
There is a good article here explaining how to setup Failed Request Tracing in IIS :
Using Failed Request Tracing to Trace Rewrite Rules
HTH
Cédric
If you are using SQL Server Compact data file (Like NorthWind.sdf) you need to give write file permission to IUSRS group.
Ex: If you are using NorthWind.sdf in DataDirectory i.e. YourWeb/App_Data then you need to give write permissions to _IUSRS group from IIS Console or from Windows Explorer.
Related
I am trying to publish as ASP.NET Core project with a hosting provider that supports ASP.NET Core. I am getting 500 Internal Server Error which I believe is very common. So I searched through the internet and various forums and then I checked the processPath="%LAUNCHER_PATH%" arguments="%LAUNCHER_ARGS%" in web.config and they look to be correctly converted with processPath="dotnet" and arguments=".\MyApplication.dll".
I also checked the connection string and it points to production DB server that's working. I confirmed the DB connection by changing the connection string to production DB and running project local. It works and I get the production DB access.
I also tried to get the error info by using the below in my Startup.cs (irrespective of env):
app.UseDeveloperExceptionPage();
app.UseDatabaseErrorPage();
app.UseBrowserLink();
I have also enabled stdoutLog in web.config, but I don't see that folder either:
stdoutLogEnabled="true" stdoutLogFile=".\logs\stdout"
I also tried to change applicationUrl and launchUrl in launchSettings.json to my prod Url, but that didn't work as well.
So, the 500 Internal Server Error refuses to go away, and I still don't have a useful error message. The page just says:
Oops.
500 Internal Server Error
An error occurred while starting the application.
I would really appreciate if someone could help me here.
I have also enabled stdoutLog in web.config as but I don't see that folder either:
stdoutLogEnabled="true" stdoutLogFile=".\logs\stdout"
There is one trick here - you must create both folders logs and stdout manually - then and only then IIS will create log file inside logs folder (not stdout as you could expect) - don't ask me why, because I don't know why ;)
Oops. 500 Internal Server Error An error occurred while starting the application.
Usually, means problems with a configuration in Startup.cs - the most common problems include an issue with DB itself, an issue with migrations (if you are using Code First approach), problems with appsettings.js, problems with Social Logins credentials (like missing SecretKey)...
Please refer to log file in .\logs\stdout - this is the quickest way to find details about the problem :)
app.UseDeveloperExceptionPage();
app.UseDatabaseErrorPage();
Those will work after your WebApp fully started, but not while starting the application.
in web.config file change modules="AspNetCoreModuleV2" to modules="AspNetCoreModule"
and watch this video
https://www.youtube.com/watch?v=clCR3k6kkD8
Thanks to Lukasz for his comments. I was able to see the log and it stated that "ClientId option must be provided". The problem was with the UserSecrets. Since secrets.json is only available in Development, there were no secrets found in Production. Once I had the secrets in my appSettings.json, it worked fine.
Moreover, To replicate this in Local environment, just go to Project properties and change the environment variable ASPNETCORE_ENVIRONMENT to 'Production' and run in local. This will replicate the 500 Internal Server Error in local and you'll get the error message.
Also, ensure that the ASP.NET Core Windows Server Hosting bundle is installed. THis creates a reverse proxy between IIS and the Kestral server.
More Info:
https://learn.microsoft.com/en-us/aspnet/core/publishing/iis?tabs=aspnetcore2x#tabpanel_tfsY37MhAQ_aspnetcore2x
I would like to add some more info to #Lukasz Makowej answer.
I found out the reason why to have to create the folder, in microsoft documentation it is said that:
stdoutLogFile - Optional string attribute.
".....Any folders provided in the path must exist in order for the module to create the log file...."
So you have to create it yourself :)
Check it out here:
https://learn.microsoft.com/en-us/aspnet/core/host-and-deploy/aspnet-core-module?view=aspnetcore-2.0
I also must said that in my case I had to validate that the web-site had the permissions to access to the "log" folder.
Make sure your web.config is good. I've been stomped more than once by a syntactically good web.config that referred to a module (Rewrite) that wasn't on the server. No error messages anywhere, other than the 500 response error.
Std log wasn't working for me, I had to uninstall all .ENT Core runtime / SDK versions from the server and my local to install the latest one and it worked after publishing everything again from scratch.
Another thing that helped was binding the IIS app to port 5000 without any dns so it actually showed me errors on http://localhost:5000
Encountered this issue yesterday, we also had no logging, no eventlog message whatsoever.
Then we checked the site's authentication settings via the IIS-manager to double-check the settings. And pop suddenly a popup with an error message 'Error on line XXXX'.
Turned out the configuration section was locked in the website's config at server-level.
So try unlocking the relevant IIS configuration settings at server level, as follows:
Open IIS Manager
Select the server in the Connections pane
Open Configuration Editor in the main pane
In the Sections drop down, select the section to unlock, e.g. system.webServer => security => authentication
Click Unlock Attribute in the right pane
Repeat for any other settings which you need to unlock
Restart IIS (optional) - Select the server in the Connections pane, click Restart in the Actions pane
So I have my web.config connection string pointing to my SQL Server on appharbor - from local (running Visual Studios) I can login and the memberships works. However from the build that is on the hosting side I get sorry, an error occurred while processing your request.
This is strange because I made a new user from local and check with SQL Server Management Studio whether or not the data has been added to the hosting server and it WORKS.
From my latest build I get the error:
Sorry, an error occurred while processing your request.
which is weird because they both point to the same server...
Anyone have an idea of what I am doing incorrectly?
ASP.NET MVC project has the "HandleErrorAttribute" on by default. You should remove it from FilterConfig.cs in App_Start Folder to see the actual error rather than the handled response.
It's located in the RegisterGlobalFilters method where filters.Add(new HandleErrorAttribute()); should be removed.
AppHarbor has a FAQ to help you troubleshoot deployment errors like these. In particular, you should inspect the "Errors" interface on AppHarbor and disable customErrors. Please elaborate the question if the FAQ doesn't help you solve the problem.
I am having this error when I try to download LINQPad sample libraries: Error while unpacking sample queries: C:\Documents and Settings[user]\Local Settings\Temp\LINQPad\TempSampleQueries849247.zip is not a valid zip file.
I use LinqPad 4 (installed version). The weird thing is I also have LINQPad 4 (licensed standalone executable) at home and I didn't encounter any problems in downloading. Do I need to have license to be able to download the sample files?
Edit:
I am also having problems in activating my LINQPad. The error says: Unable to contact licensing server: The remote server returned an error: (407) Proxy Authentication Required. I pretty much sure I'm not using any proxies. Please help! Thanks.
Are you certain you're not going through a proxy? I don't see any other way you could be getting a 407 error. Entering the proxy username/password into LINQPad's proxy dialog (Edit | Preferences | Updates) should fix it.
If you're still unable to proceed, you can perform an offline activation here and download the sample libraries via a web browser here. After downloading a samples zip file, click 'Download more samples' and type in the local file path to import it.
Simple solution to prevent the proxy 407 authentication needed error when licensing or updating Linqpad: Add the following to Linqpad's config file
<system.net>
<defaultProxy useDefaultCredentials="true" />
</system.net>
Can anyone shed any light on this? I feel like I have wasted the entire day today hunting and searching the internet for any scrap of information about how to do this. I have created a very simple WCF RESTful service. It is basically a proof of concept. I have a simple database behind it and I am just trying to get it working so that I can view, create, update and delete items. Right now I only have view and update working. I'll tackle create later. For now I can't figure out why the delete doesn't work. Almost everything I have found so far tells me that I need to disable the WebDAV module. I did that and then I got PUT to work. But I can not get DELETE to work. Whenever I attempt to call DELETE through my service I get the following error:
The remote server returned an unexpected response: (405) Method Not Allowed.
So it seems like somewhere on my server it is not allowing the DELETE verb. But for the life of me I can not figure it out. I already checked the Handler Mappings and the handler allows all verbs for the .SVC extension. I have disabled WebDAV. I'm not really sure where else to look. I am using IIS 7.5 on Windows Server 2008 R2.
(I can provide code if it would help at all)
Thanks,
Corey
In case anyone having the same issue.
Here is another way you can try.
in web.config
<system.webServer>
<modules>
<remove name="WebDAVModule" />
</modules>
<handlers>
<remove name="WebDAV" />
</handlers>
</system.webServer>
I just spent a ton of time trying to figure out why I kept getting 405 Method Not Allowed when using the DELETE verb. Everything I read said to uninstall WebDAV from IIS, but that seemed to break IIS in that all sites gave 503 errors. I reinstalled it, then went about looking in IIS for some setting.
It turns out that WebDAV is the problem, and it has a node on the IIS features page named "WebDAV Authoring". Clicking on that lets you then click on WebDAV Settings... to get the properties page. In the section Request Filtering Behavior, set Allow Verb Filtering to False seemed to do the trick for me (YMMV).
This seemed to be a popular result when googling for a solution, so I thought I'd add to the list of suggested solutions.
Open your website's Handler Mappings in IIS Manager
Edit each handler you want to DELETE with, clicking Request Restrictions, choosing the Verbs tab, then add DELETE to the "One of the following" list or, if appropriate within your concerns, allow all verbs.
You might need to restart your website and/or recompile your code
Well I'm not sure if this is really an answer to my question but it did solve the problem. I simply started a new project in Visual Studio and this time I used the .NET REST Service template that I found online. Then I transferred the old code I had from my previous attempt and used it in the new project. It worked like a charm. All four verbs work correctly now (GET, PUT, POST and DELETE). So it is working now.
Corey
Is there a way to enable and see server output on IIS 6.0?
I have deployed my VS 2008 MVC 2 project into IIS 6.0 with wildcard mapping. Static views show up correctly, but database access doesn't work.
My problem is I don't see any error message or error output. So I wonder if I can see server output for my sample web site, that could help me to see what goes wrong?
For example, I will put output before and after connection, the easiest way to debug.
Console.WriteLine("Before connection");
Console.WriteLine("After connection");
However, IIS Manager doesn't allow me to see anything server output except log, which record only GET and POST actions.
There is no "server output". You can have your code write lines to a log file or you can use Visual Studio to attach to the process and debug it that way.
If you need to log NHibernate information to diagnose a problem, use log4net. See this article as reference.