I have been trying to implement a webDAV connection on an existing IIS ASP.NET web site. This issue surrounds permissions and connectivity when "Enable anonymous access" is unchecked and disabled.
I have tried every combination available. The server is w2k3 Web Edition, no AD, IIS6, so "Digest authentication for Windows domain servers" is not an option in the Authenticated Access section of Authentication Methods of the Virtual Directory I am sharing in the web site.
I have read about and tested the Registry Edit of the following key, \HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlset\services\WebClient\Parameters\BasicAuthLevel
and change the value to 2
agianst each possible authentication method. It seems to disable connectivity more then helping.
I am trying to map a path to a virtual directory on the web server, a function of the webDAV protocol, works great if anonymous access is enabled, but obviously can not be for this project.
I would like to at least get the Windows Authentication to work and disbale Anonymous Access.
I have been testing this on both a development server and production server and the behavior is consistent. On a Win7 OS I can not get the Windows Authentication dialog box to appear.
A few tests on XP, the box appeared but would not authenticate, but this may have been related to other config issues.
I have also tested with Permissions to the Everyone group just to see if I can connect.
Any further suggestions would be appreciated.
UPDATE: I found this article that explains a portion of the problem and work around though not entirely fitting for the issue explained above.
http://support.microsoft.com/kb/943280/en-us
Try adding permissions for Network_services and the IIS User on that box. that has always gotten me over the permissions issues I have faced. You need to add these from within IIS as at least with IIS 7 it seems to over rule the permissions from windows explorer. Not sure if IIS 6 does the same but I just do it by default now.
UPDATE: I found this article that explains a portion of the problem and work around though not entirely fitting for the issue explained above. http://support.microsoft.com/kb/943280/en-us
I don't know where sholud I ask this...
I've seen this issue and I think the answer should me close to that, but seems that I can't still do this.
The funny thing is the same (I think) was done by me in another server w/ IIS 7 a year ago or so, without further trouble. It could be also that I don't remember so much of it.
I have an Apache server running on port 80 (That can't be changed)
This is what I've done:
Integrated AppPool was an issue on the other server I've placed so I've tried to change the
Default AppPool to a Classic .Net
The WebApp Pool to a Classic .Net
The User is also mandatory on the Webservice so I'm placing a Service Account that impersonates for any anonymous (or not) user that might access so I have
The ServiceAccount as Administrator of wwwroot and subfolders
The ServiceAccount as Impersonated by default in the Default Web Site
The ServiceAccount as Impersonated in every Web App I need
Shared r/w the folder with the ServiceAccount
Also
I've tested the access and both Authorization & Authentication works
marvelous.
I've restarted the app, the site and the IIS multiple times without
success.
Checked the Event Log without finding anything useful.
Modified applicationHost.config getting into more troubles than solutions.
This is what I get when I try to see the App Settings at IIS7
--------------------------- Application Settings ---------------------------
There was an error while performing this
operation.
Details:
Filename:
\?\C:\Windows\system32\inetsrv\config\applicationHost.config
Line number: 165
Error: Can not log on locally to %SystemDrive%\inetpub\wwwroot as user
MyDOMAIN\MyUser with virtual directory password
--------------------------- OK ---------------------------
This is what I see when I go to my page (an asmx)
HTTP Error 500.19 - Internal Server Error The requested page cannot be
accessed because the related configuration data for the page is
invalid.
Detailed Error Information Module IIS Web Core Notification
Unknown Handler Not yet determined
Error Code 0x80070569
Config Error Can not log on locally to C:\inetpub\wwwroot as user
MyDOMAIN\MyUser with virtual directory password
Config File Unavailable (Config Isolation)
Requested URL
http://localhost:8080/myApp/MyWebService.asmx
Physical Path
Logon Method Not yet determined
Logon User Not yet determined
#Edit: 0x80070569 Drove me to see that The service account weren't logging on as a Service (as it should), nor as a Batch process.
It was a Security Setting that should be touched, a group policy object has to be set to the account (in the Example MyDOMAIN\MyUser). And that's an access that only the area of IT Security can grant.
Even when this was changed the problem remained still.
The accepted answer didn't work for me.
But when I followed the below steps, my issue was resolved:
Go to your IIS manager.
Click on Sites
Right click on Default websites, Go to Manage Website and then click on
Advanced Settings
Set your physical path credential to Specific user with credentials
Restart IIS
Note: You may also need to reenter the credentials in the application pool, if the system password has been changed recently.
It actually was a secpol.msc Policy What was blocking the web access. The ServiceAccount wasn't a Service one.
As in the edit that I posted IT Security gave me the privileges to set it a*s a Service Account*, but that alone just wouldn't do the trick.
In the Advanced Settings of the webSite
Physical Path Credentials Logon Type, Batch logonMethod was selected.
And the service account still wasn't with the privileges to run as a Batch Process.
And that was it.
Not only the service account, but also The Run as a Batch Job was necessary.
Sometimes it causes by changing administrator password or changing user access.
After that application pool cannot access to local user.
One of the most stupid solution for this problem is remove website and application pool then make another website.
This solution helped me.
Check the Password of your Application pool and application. Try clicking on the Test Settings to check the connection is proper
The accepted answer didn't work for me.
But when I followed the below steps, my issue was resolved:
1. Go to your IIS manager.
2. Click on Sites
3. Right-click on Default Web Sites and select 'Basic Settings'
4. Select Classic .NET AppPool from the Application Pool drop down
5. Save and Exit
Everything went normal.
None of the other answers solved the issue for me.
In the end, I had a re-create my site and app pool, which is far from ideal, but was the only solution that worked.
IIS must have been caching an old value that I couldn't find/clear.
I have a .NET 3.5 application running under IIS 7 on Windows 2003 server and cannot get integrated windows authentication working properly as I continue to get prompted for a login. I have set Windows Authentication to enabled in IIS with all other security types disabled and my application web.config file authentication/authorization is set up as:
<system.web>
<compilation debug="true" strict="false" explicit="true" targetFramework="3.5" />
<authenticationmode="Windows"/>
<authorization>
<deny users = "?" />
</authorization>
</system.web>
With this setup, I'm expecting behind the scene verification of the Windows user to allow access and deny anonymous users. However, what I'm getting is a Windows login pop-up when I try to access the site.
I have been troubleshooting this issue for a few days now and cannot figure out the problem. Based on posts with similar problems, I confirmed my URL does not include any periods, double checked that my IE settings are set to Enable Integrated Windows Authentication, and also added my URL to my intranet sites, but still getting the pop-up.
To troubleshoot it further, I enabled Anonymous Authentication in IIS and modified my web.config file to which lets me right in and then added Response.Write(System.Security.Principal.WindowsIdentifity.getcurrent().user.name.toString()) to try to see what user is being used in the authentication. The result I'm getting is IIS APPPOOL\myapp which is obviously the IIS application pool for my application.
I really appreciate any help anyone can provide so that I'm still using only windows authentication but don't get the pop-up and the windows authentication is performed against the actual Windows user.
Thanks.
Additional note after troubleshooting further:
Just noticed that when the login fails and the Windows login prompt displays again, it is showing the username that attempted to login as "SERVERNAME"\"USERNAME" which led me to believe it was trying to validate the user against the server vs. the domain. To confirm this, I created a local user account directly on the app server with the same username and password as the network domain user and tried to login again. The result was that I received the login prompt again but when I entered the username and password this time, I was able to successfully login. The network user and app server are on the same domain so really not sure why IIS authentication is pointing to the local app server accounts and not to the domain accounts. I realize this is an IIS question at this point so posting on forums.iis.net as well but appreciate any advice anyone may have since have been troubleshooting this for days.
I have a Windows 2008 server that I'm working on, so my answer is not completely the same as what the OP has on a Windows 2003 server.
Here is what I did (recording this here so I can find it later).
I was having this same issue:
In my Web.config file, I had this section:
<system.web>
<authentication mode="Windows" />
<authorization>
<allow users="*" />
<deny users="?" />
</authorization>
</system.web>
Under IIS, all of these seems to be solved under the Authentication icon.
Edit Permissions: Make sure your ASP.NET account has permission. Mine was not originally added.
Now go into the features of Authentication:
Enable Anonymous Authentication with the IUSR:
Enable Windows Authentication, then Right-Click to set the Providers.
NTLM needs to be FIRST!
Next, check that under Advanced Settings... the Extended Protection is Accept and Enable Kernel-mode authentication is CHECKED:
Once I did this, I went back to my web application, clicked the Browse link, and logged in without having to provide my credentials again.
I hope this proves beneficial to many of you, and I hope it is useful for me later as well.
Just for other people's benefit. If the error is a 401.1 Unauthorized and your error code matches 0xc000006d, then you're actually running into to a security "feature" that blocks requests to FQDN or custom host headers that don't match your local machine name:
Follow this support article to fix the issue:
https://webconnection.west-wind.com/docs/_4gi0ql5jb.htm (original, now defunct: http://support.microsoft.com/kb/896861)
From the support article, to ensure it doesn't get lost:
The work around is a registry hack that disables this policy
explicitly.
To perform this
configuration manually find this key in the registry on the server:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa
and edit or add a new key:
DisableLoopbackCheck (DWORD)
then sent the value to 1 to disable the loopback check (local
authentication works), or to 0 (local authentication is not allowed).
Or more easily you can use Powershell:
New-ItemProperty HKLM:\System\CurrentControlSet\Control\Lsa -Name
"DisableLoopbackCheck" -Value "1" -PropertyType dword
It looks like
recent builds of Windows 10 (1803 and later?) also require this
configuration setting in order to authenticate locally.
This one took me awhile because everyone else's comments here failed to help me. I found this article and it fixed it!
I had a similar issue whereby I wanted to protect only a certain part of my website. Everything worked well except in IE. I have both Anonymous and Windows Authentication enabled.
For Anonymous, the Identity is set to the Application Pool identity. The problem was with the Windows Authentication. After some digging around I fired up fiddler and found that it was using Kerberos as the provider (actually it is set to Negotiate by default). I switched it to NTLM and that fixed it.
HTH
Daudi
Add permission [Domain Users] to your web security.
Right click on your site in IIS under the Sites folder
Click Edit Permissions...
Select the Security tab
Under the Group or usernames section click the Edit... button
In the Permissions pop up, under the Group or user names click Add...
Enter [Domain Users] in the object names to select text area and click OK to apply the change
Click OK to close the Permissions pop up
Click OK to close the Properties pop up and apply your new settings
If your URL has dots in the domain name, IE will treat it like it's an internet address and not local. You have at least two options:
Get an alias to use in the URL to replace server.domain. For example, myapp.
Follow the steps below on your computer.
Go to the site and cancel the login dialog. Let this happen:
In IE’s settings:
Don't create mistakes on your server by changing everything. If you have windows prompt to logon when using Windows Authentication on 2008 R2, just go to Providers and move UP NTLM for each your application.
When Negotiate is first one in the list, Windows Authentication can stop to work property for specific application on 2008 R2 and you can be prompted to enter username and password than never work. That sometime happens when you made an update of your application. Just be sure than NTLM is first on the list and you will never see this problem again.
This fixed it for me.
My Server and Client Pc is Windows 7 and are in same domain
in iis7.5-enable the windows authentication for your Intranet(disable all other authentication.. also No need mention windows authentication in web.config file
then go to the Client PC .. IE8 or 9- Tools-internet Options-Security-Local Intranet-Sites-advanced-Add your site(take off the "require server verfi..." ticketmark..no need
IE8 or 9- Tools-internet Options-Security-Local Intranet-Custom level-userauthentication-logon-select automatic logon with current username and password
save this settings..you are done.. No more prompting for username and password.
Make sure , since your client pc is part of domain, you have to have a GPO for this settings,.. orelse this setting will revert back when user login into windows next time
WindowsIdentity.GetCurrent is correct: you should get the APPPOOL user. This is because the ASP.NET process, which is executing your code, is the current identity. If you want it to return the user hitting the site's identity, you'll need to add the following line in your web.config:
<identity impersonate="true" />
This causes the process to assume the identity of the user requesting the page. All actions will be performed on their behalf, so any attempts to read folders on the network or access database resources and the like will mean the current user will need permissions to those things. You can read more about impersonation here. Note that depending on how your web/database server topology is set up, you may run into delegation issues with impersonation turned on.
But your original issue is that it appears the identity cannot be determined and you're getting a login popup. I'll note that you do not need the <deny> block if you have disabled anonymous authentication in IIS. We never include it (except in special <location> blocks and such) so I would say you might try removing it and trying again. Everything else sounds right, though.
You didn't specify what user is running the application pool in IIS. Is it a custom account or is it the default one? If it is custom, is it a domain account or a local account on the web server? Custom accounts can sometimes require a few more steps, such as registering a SPN. Also, it may be a problem with the custom account not having permission in AD for resolving the incoming user's account.
You might also check the IIS logs to see what response is being returned. It'll most likely be a 401, but it should have a sub number after it like 401.2 or something. That sub-number can sometimes help determine the root problem. This KB article lists five.
Can be browser related. If you are using IE, you can go to Advanced Settings and check you the "Enable Windows Integrated Authentication" checkbox is checked.
In my case the authorization settings were not set up properly.
I had to
open the .NET Authorization Rules in IIS Manager
and remove the Deny Rule
In our Intranet the issue was solved on the client side by tweaking settings in security as shown here. Either of the check boxes on the right worked for us.
I just solved a similar problem with an ASP.Net application.
Symptoms:
I could log in to my app using a local user, but not a domain user, even if the machine was correctly joined to the domain (as you say in your Additional Note). In the Security event viewer, there was an event with ID=4625 "Domain sid inconsistent".
Solution:
I found the solution here. The problem was that my test machines where cloned virtual machines (Windows Server 2008 R2; one Domain Controller, and one web server). Both had the same machine SID, which apparently caused problems. Here is what I did:
Remove the web server from the domain.
Run c:\Windows\System32\Sysprep\Sysprep.exe in the VM.
Reboot the VM.
Join the web server to the domain.
You loose some settings in the process (user preferences, static IP, recreate the self-signed certificate), but now that I have recreated them, everything is working correctly.
I also had the same issue. Tried most of the things found on this and other forums.
Finally was successful after doing a little own RnD.
I went into IIS Settings and then into my website permission options added my Organizations Domain User Group.
Now as all my domain user have been granted the access to that website i did not encounter that issue.
Hope this helps
I tried the above IIS configuration tricks and loopback registry hack, and I reviewed and recreated app pool permissions and a dozen other things and still wasn't able to get rid of the authentication loop running on my development workstation with IIS Express or IIS 7.5, from a local or remote browsing session. I received four 401.2 status responses and a blank page. The exact same site deployed to my IIS 8.5 staging server works flawlessly.
Finally I noticed markup in the Response Body that was rendered blank by the browser contained the default page for a successful log in. I determined that Custom Error handling for ASP.NET and HTTP for the 401 error was preventing/interfering with Windows Authentication my workstation but not the staging server. I spent several hours fiddling with this, but as soon as I removed custom handling for just the 401 error, the workstation was back to normal. I present this as yet one another way to shoot your own foot.
I was having this issue on .net core 2 and after going through most suggestions from here it seems that we missed a setting on web.config
<aspNetCore processPath="dotnet" arguments=".\app.dll" forwardWindowsAuthToken="false" stdoutLogEnabled="false" stdoutLogFile=".\logs\stdout" />
The correct setting was forwardWindowsAuthToken="true" that seems obvious now but when there are so many situations for same problem it's harder to pinpoint
Edit: i also found helpful the following Msdn article that goes through troubleshooting the issue.
Have you tried logging in with your domain prefix, e.g. DOMAIN\Username? IIS 6 defaults to using the host computer as the default domain so specifying the domain at logon may solve the problem.
add to registry
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa solved my problem.
Create the Local Security Authority host names that can be referenced in a NTLM authentication request.
To do this, follow these steps for all the nodes on the client computer:
Click Start, click Run, type regedit, and then click OK.
Locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\MSV1_0
Right-click MSV1_0, point to New, and then click Multi-String Value.
In the Name column, type BackConnectionHostNames, and then press
ENTER.
Right-click BackConnectionHostNames, and then click Modify.
In the Value data box, type the CNAME or the DNS alias, that is used
for the local shares on the computer, and then click OK.
Note
Type each host name on a separate line. If the
BackConnectionHostNames registry entry exists as a REG_DWORD type,
you have to delete the BackConnectionHostNames registry entry. Exit
Registry Editor, and then restart the computer.
Source: Error message when you try to access a server locally by using its FQDN or its CNAME alias after you install Windows Server 2003 Service Pack 1: Access denied or No network provider accepted the given network path
For what it's worth, I did not need to restart after making the change on Windows Server 2019.
Windows authentication in IIS7.0 or IIS7.5 does not work with kerberos (provider=Negotiate)
when the application pool identity is ApplicationPoolIdentity
One has to use Network Service or another build-in account.
Another possibility is to use NTLM to get Windows Authenticatio to work (in Windows Authentication, Providers, put NTLM on top or remove negotiate)
chris van de vijver
I had the same problem cause the user (Identity) that I used in the application pool was not belowing to IIS_IUSRS group. Added the user to the group and everything work
In my case the solution was (on top of adjustments suggested above) to restart my/users' local development computer / IIS (hosting server).
My user has just been added to the newly created AD security group - and policy didn't apply to user AD account until I logged out/restarted my computer.
Hope this will help someone.
I encountered the same credential prompting issue, and did a quick search and nothing on the internet would fix it. It took some time to find the problem, a silly one.
In IIS -> Advance Setting -> Physical Path Credential (is empty)
As soon as i added a machine ID (domain/user) that has access to the VM/server, the password prompting would stop.
Hope this helps
I got the same issue and it was resolved by changing the Application pool identity of the application pool under which the web application is running to NetworkService