From Flex we call a Upload.aspx page which is configured for anonymous authentication. Most of the time, it works like a charm, but once in a while, the browser does prompt a enter credentials popup...
The whole site is configured for Windows Authentication, but some pages and folders are set to use anonymous authentication. This is done using the location tag in web.config.
What could be the reason for this?
UPDATE:
Only happening in Internet Explorer... they should deport it.
If you use FireFox with FireBug, open up the Net panel, it will show you the request making the permissions request. If you cancel it, it will show an access denied in red, and that will easily help you hunt the issue down.
Maybe it's because a file (image, css, etc.) is being referenced that doesn't exist?
A couple of things I would check out:
Are there any images/other files that are added to your page using the FQDN? If so, are any of these pointing to an external site or staging site that might require credentials?
Is it possible that someone has removed permissions from the application pool credentials on the web server for some specific file or files the site is requesting?
Is the site load balanced or part of a farm? It could be that one or many servers are configured incorrectly, and the rest are ok. Then if by chance you hit the bad servers, you could get the prompt.
Related
I recently changed the frontend of a project, to use windows authentication.
But i still want the backend to use forms authentication, I think i read somewhere that it was not possible to use both authentication methods at the same time. But I seem to have it working, sort of.
I'm using umbraco v4.7.2 - To those that doesn't know this CMS, it's basicly just like any other CMS, the backend of the application is the umbraco "backoffice", basicly just an application hidden away in a folder called "~/umbraco/"
This folder has a custom membership provider configured in the web.config.
The frontend site authenticates users automaticly using windows authentication with a role/group restriction. And this is pretty fast, no problems there.
But when i try to access the umbraco folder, which is configured to enable anonymous access, IIS just hangs for at least a minute, before sending me to the login page.
And after the initial hang, i am able to browse the backend fine, but if i leave the backend, and go to the frontend of the application, and then back to the backend, i get the same hanging again. etc.
I tried debugging the code from visual studio, but all i get is some obscure disassembly, which i am unable to make any sense of.
EDIT: This is very odd, as requesting the folder "umbraco" is very slow, but after waiting and being redirected to "umbraco/login.aspx", refreshing this page, or any other page in umbraco is not slow at all. But requesting the folder "umbraco/" is still very slow.
Fiddler
ServerGotRequest: 10:09:21.352
ServerBeginResponse: 10:11:11.961
GotResponseHeaders: 10:11:11.961
ServerDoneResponse: 10:11:11.961
After the ServerGotRequest, something is making IIS hang.
I will try and create another folder with the same configuration, and see if this also happens then.
Has anyone got any clues to what might cause this?
Thanks :)
I assume this is an IIS error, as this doesn't happen if I run the project on my local machine.
I have my stylesheets at ~/Content/css
Any files in that directory won't load on the page, and when I navigate to them directly, I get a server error:
401 - Unauthorized: Access is denied due to invalid credentials.
You do not have permission to view this directory or page using the credentials that you supplied.
This only happens with that directory, I have no problem accessing any other files. Is there something I need to do in IIS7 to stop this?
Open IIS and select site that is causing 401
Select Authentication property in IIS Header
Select Anonymous Authentication
Right click on it, select Edit and choose Application pool identity
Restart site and it should work
It is likely that you do not have the IUSR_computername permission on that folder. I've just had a quick scan and it looks like you will find the information you need here.
If that isn't the case, are you prompted for your username and password by the browser? If so it may be that IIS is configured to use Integrated authentication only, as described here.
Open IIS
select site where you are facing the problem
Select Below
- Right click on Anonymous Authentication and click on edit and follow below
You do not have permision to view this directory or page using the credentials that you supplied.
This happened despite the fact the user is already authenticated via Active Directory.
There can be many causes to Access Denied error, but if you think you’ve already configured everything correctly from your web application, there might be a little detail that’s forgotten. Make sure you give the proper permission to Authenticated Users to access your web application directory.
Here are the steps I took to solve this issue.
Right-click on the directory where the web application is stored and select Properties and click on Security tab.
Click on Click on Edit…, then Add… button. Type in Authenticated Users in the Enter the object names to select., then Add button. Type in Authenticated Users in the Enter the object names to select.
Click OK and you should see Authenticated Users as one of the user names. Give proper permissions on the Permissions for Authenticated Users box on the lower end if they’re not checked already.
Click OK twice to close the dialog box. It should take effect immediately, but if you want to be sure, you can restart IIS for your web application.
Refresh your browser and it should display the web page now.
Hope this helps!
You need to check the folder permissions on your server and check that the account that you are using to run your application has access to that folder.
For me the Anonymous User access was fine at the server level, but varied at just one of my "virtual" folders.
Took me quite a bit of foundering about and then some help from a colleague to learn that IIS has "authentication" settings at the virtual folder level too - hopefully this helps someone else with my predicament.
In our case it was Windows-integrated authentication specified in the app's web.config
BUT the windows-auth module was not installed on the IIS machine at all.
Just adding another possible reason.
Another simple fix I found was to delete the local IIS site (from within IIS Manager) and then re-create the virtual directory from the "Properties" of your web project in Visual Studio.
I have been trying to configure a small website on a Windows Server 2008 running IIS 7. Unfortunately, when trying to load the website I keep getting the error: Server Error 401 - Unauthorized: Access is denied due to invalid credentials.
The permissions on the website folder include read, write, and execute for user ASP.NET v4.0. I even clicked "Check names" before adding the user to folder, to make sure that I spelled everything correctly. But the error continues to show. Also, I noticed that everything works okay if I add "Users" to the permissions for the folders containing the website, but I don't see why this should be necessary. I only want to give ASP.NET v4.0 access to the folder.
Some other noteworthy points include that I'm using the ASP.NET v4.0 application pool, that the managed pipeline is integrated, and that load user profile is set to true.
If anyone has any ideas, I'd appreciated the help. I'm stumped!
EDIT: Does it matter that the website is on the d: drive? I just assumed this wasn't important...
I find I always need to give IIS_IUSRS access.
I'd recommend you to use the Process Monitor to detect which user is actually accessing the file.
Here you'll find an explanation about how to achieve that.
Open IIS7 on the server. Highlight the site, and double-click on the Authentication icon in the Security Section. Check that Anonymous Authentication is enabled.
Some troubleshooting links for this particular issue:
http://support.microsoft.com/kb/902160
http://support.microsoft.com/kb/907273
I am trying to FTP to a new FTP site I setup with IIS 7.0 for the Windows Server Web (64-bit) edition. But I get the above error when I try to login to this site. But I can login to my other FTP sites.
Also, when I select this website from IIS Manager, the FTP section does not display in the middle section although it does display in Action panel. And I cannot successfully login to this FTP site either.
I have checked and I have Log on locally selected. I do not have allow only anonymous connections. I have Access this computer from the network selected.
I restarted my IIS and FTP services also.
The one different thing I noticed about this website in IIS different from the other site that has FTP working is that this one there are 3 virtual directories beneath the site. And that when I click on any one of these 3, then the FTP strip does appear in the center pane. Make sense?
How can I debug cause of this error? Any SW tools I can use?
Have you tried logging in from the FTP server? If you do this, and have "Show detailed messages from local requests" enabled under FTP Messages, then you'll get a clearer idea as to why the login if failing. In my case I got the following message (I am using IIS Manager Users, and Passthrough authentication)
530-User cannot log in.
Win32 error: Access is denied.
Error details: Filename: \\?\C:\Windows\system32\inetsrv\config\redirection.config
Error: Cannot read configuration file due to insufficient permissions
To solve this I gave the NETWORK SERVICES user read only access to the config directory specified in the error message. I'm not 100% sure this is the right thing to do, but it certainly fixed this issue for me.
in my situation, I was missing Role Service FTP extensibility, which is actually allows IIS Manager Auth.
This is pretty tricky, as you could allow IIS Manager auth, but still it would not work until you have not installed FTP Extensibility
In my case I forgot to enable the Basic authentication
There seem to be many different possible causes. In my case, I was unable to login with the plain "username" with the same error as mentioned.
It was solved when I logged in with ".\username" instead.
For some reason the FTP client was trying to login with a domain account, while I just wanted to login with a local computer account.
Hope this helps someone.
Try submitting your credentials in this format:
UserName: Domain|Username
Password: secretSquirrel
I had the same problem, I removed the FTP site and followed this:
http://www.iis.net/learn/publish/using-the-ftp-service/configure-ftp-with-iis-manager-authentication-in-iis-7
Prerequisites - I set the permissions on the folders using the 4 command samples but this did not alone fix the issue, so I cannot in good faith say this step is needed, but it is what I did and it now works.
CONFIGURE THE IIS MANAGEMENT SERVICE AND ADD AN IIS 7 MANAGER -
Just do step 4, removing the existing user first and then re-adding them.
Creating a New FTP Site and Configuring an IIS 7 Manager Account -
All the steps here
CONFIGURE THE FTP SITE TO USE IIS 7 MANAGER AUTHENTICATION
All 12 steps here, including the "administrator" setting in step 5.
Then it started working for me, I am guessing when I did this without a guide I skipped something simple.
In My case I have made that user a member of IIS_IUSERS.
Using IIS Users.
Do not isolate users -> User name directory was working fine. Users started in the right folder.
When I was switching to Isolate Users -> User name Directory I had the following error:
Response: 530 User cannot log in, home directory inaccessible.
Win32 error: The system cannot find the path specified.
For some reason, you need to add the LocalUser virtual directory that points to your root.
It has to be that exact name and it's case sensitive.
That worked for me.
Per this knowledgebase article, you would need the log on locally privilege enabled.
http://support.microsoft.com/kb/200475
I had the exact same error. In my case, I was using a local user defined on the server running FTP. The username was very short (3 characters). I could "run as" this user on the server, confirming that Windows was Ok with it, and allowed it to authenticate. But when testing FTP, it would return User cannot log in.
Solution? I renamed the user to be longer (4 characters). Of course, updated its name under Authorization as well. Then FTP worked. Hope it helps someone!
For me, I've configured the IIS as per usual procedure properly. The anonymous authentication was working but specific user are not.
because, the user accounts were created in IIS. Actually it was also supposed to be created Windows local accounts.
Then it worked.
Please Check the security of folder which is use that ftp .
see if the user or group you select for that ftp is associate with security of that folder .
In my case I had to remove domain from user.
So, your user should be like username, not like domain\username.
Hope it helps to somebody.
For some reason my user was "locked". So I could "unlock" it at local user manager (computer management). Now it works fine. I hope it helps.
I would recommend checking FTP logs first. The status code will give you more information about the issue. Here is the explanation of the status codes: The FTP status codes in IIS 7.0 and later versions
I had this issue because my IIS didn't support passive mode. After entering data in FTP Firewall Support module, the issue was solved.
More scenarios from this post 530 User cannot log in, home directory inaccessible
Authorization rules. Make sure to have an Authorization rule that allows the user or anonymous access. Check “IIS > FTP site > FTP Authorization Rules” page to allow or deny access for certain or all users.
NTFS permissions. The FTP users (local or domain users) should have permissions on the physical folder. Right click the folder and go to Properties. In the Security tab, make sure the user has required permissions. You can ignore Shared tab. It is not used for FTP access.
Locked account. If you local or domain account is locked or expired, you may end up seeing “User cannot log in” error. Check local user properties or Active Directory user settings to make sure the user account is active.
Other permission issues. The user account may not have “Log on locally” or “Allow only anonymous connections security” rights.
I spent long time looking for a solution, I've tried every shared answer on the internet and nothing could solve the issue. It is an issue I was ignoring for years and I never could fix.
Ok, I've Plesk installed and I'm not sure if it has some effect on IIS FTP to do the following behavior ...
Using Process Monitor tool, and making ftp login request and watching the tool and doing your investigation using this tool, you can get a hint about the REAL reason of the problem.
For me, I found out that IIS FTP was trying to access the ftp folder from a path DIFFERENT than the actual ftp path I've set, I do not know why, but maybe Plesk has some effect on this.
The actual ftp path is
C:\inetpub\vhosts\zidapp
The path that IIS FTP was trying to access DURING the login process is
C:\inetpub\vhosts\Servers\7\localuser\zid_app_ftp_user
I fixed the issue by creating a folder link from 'actual' folder path to the path IIS was trying to access - using the tool mklink tool
CMD command
mklink /d C:\inetpub\vhosts\Servers\7\localuser\zid_app_ftp_user "C:\inetpub\vhosts\zidapp"
I've fixed the issue that way, so wen FTP is trying to access the folder from the wrong path, it is now goes to the correct one.
Please note doing folder shortcut wont work for this, you need a link like linux, not a shortcut ...
I hope it will help you :)
You can check the reference account you are using to log in.
Mine happened to be locked out causing the 530 error.
This application is using windows integrated authentication in IIS. No anonymous login.
It's also using an application pool defined to log on with a domain user.
If a try to browse any page, it pops up the username and password dialog box and even though I entered a valid user (including the domain administrator) it doesn't log on into the app. I keep getting the username/password dialog. If I logon locally (in the IIS box), it works OK.
Also, if I change the application pool to use Network Services, it works OK.
The domain user is already a member of the local IIS_WPG group in the IIS box.
Am I missing something here?
If you use a domain account for the Application Pool you have to run a series of scripts on the domain controller. So, apparently it's not recommended to use a domain account, rather a local server account. Microsoft has this issue documented on a case:
http://support.microsoft.com/default.aspx/kb/871179
I suspect the NTFS file persmissions on the .aspx files don't allow the users you are logging in as the needed access to read/execute them. What are the file permissions on the files you are trying to view? What do your authorization and authentication elements in web.config look like?
This sounds like it's related to the privilges assigned to the domain user. i.e. whether they, or indeed the server, are permitted to impersonate the user that is logging in. Or, something regarding "Trusted for delegation" in the server's settings in AD. Either way, you'll probably get a better response on serverfault =)
Try entering the same user of the appPool as the anonymous user (Web Site Security tab)
I had the same user/pwd Popup problem in Svr 2003.
I solved it by CHECKING ANONYMOUS ACCESS in directory security of DEFAULT WEB SITE.
It promps you if you want to also affect your sites you click OK.
That did it.