I have a website in IIS 6.0 using an application pool with a custom service account. When I browse the website, I get an error "service unavailable" and the error in event log says
The identity of application pool 'SampleAppPool' is invalid, so the World Wide Web Publishing Service can not create a worker process to serve the application pool. Therefore, the application pool has been disabled.
I think the utility "Aspnet_regiis" can be used to grant access to an account to IIS metabase according to this article, but is that the right way to fix this issue? Because this utility is used for multiple things and may do more than just granting the permissions to the account, or should I just add the account manually to IIS_WPG group?
When I see this in IIS 6 and the user has a custom app pool identity, the problem typically originates in the entry of credentials in the app pool properties. So there are generally two origins for the issue.
One is a simple typo in the credentials, unfortunately the form validation is not very good in IIS 6, so I often will have users change the identity of the app pool, then immediately check that the credentials "took" and/or check the System event log for W3SVC and related errors.
The second specific cause I see in this scenario is when people enter an Active Directory user, they sometimes forget to add the domain name. (e.g. DOMAIN\Username). Which leads me to the next point, the IIS_WPG is the builtin local group which grants members the required ACLs to run as an app pool identity. The aspnet_regiis.exe -ga grants the same thing to users, but IMO it is best suited for use when the IIS_WPG group is not an option. Also a dedicated app pool user account is generally a good idea. If the AD user password is changed, you'll bring your app to its knees until you again re-enter the credentials in the IIS Manager.
Edit: I added some para breaks to make this chunk more readable.
I had this same problem and I resolved it by starting the application pool. Ours was stopped even though IIS was running.
"The identity of application pool 'SampleAppPool' is invalid..."
Every time I have had that error, it was because the user name and password where not correctly entered in the application pool. This happens also when you import the pool settings from another server. Reentering the password in the application pool identity configuration has always solved the problem.
Once you get that right, you will probably meet the second problem you are describing, but that's an unrelated issue. It can be fixed as you describe, or even manually granting the required access permissions to the application pool identity.
If you are connecting to a remote machine using one or more remote access tools, take note: your keyboard mappings may be getting screwed up somewhere along the way!
In my case, I tried typing out certain letters of the password in a plain text editor on the remote machine (not necessarily in the same order, to retain security). When attempting to type the dollar character, I found that if I used the left shift key I got a "$" but if I used the right shift key I got a "4".
Once I had that figured out, I could enter the correct password for the Application Pool Identity. (Note: when filling out the identity section, IIS does not validate the password you enter against the user identity, only that the two passwords you enter match each other).
Related
We recently had to change a domain admin password due to a security issue. As a result, on our prod web server, we're seeing a large number of Event ID 4625 errors showing up in our security log associated with an IIS App Pool. We're on Windows 2012 R2/IIS 8.5; ASP.NET 2.0 & 4.0 are installed on the system.
The interesting piece is that the App Pool in question never used the domain admin account as its Identity. It has always used the out of the box ApplicationPoolIdentity. I should also note that the server was logged off using that affected user well prior to the password change & a new account is now used to administer the server.
The server itself though was in fact built using the affected domain admin account. All roles/features were added while logged in as the aforementioned account. With this in mind, no services are running as the account, ie World Wide Web Publishing Service/IIS Admin service. They're running as Local System & always have.
No functionality has been compromised, everything is operating normally on the web server. The issue is that our tech services team is receiving constant notifications from their account monitoring software regarding the bad logon attempts & it is impeding their operations. Full disclosure... We haven't had an opportunity to reboot the server yet since its production, we will be doing that tonight.
The problem seems to be relegated to the root of the site, the \wwwroot folder. Segregating only the root app to its own app pool/turning off the pool is not an option since it services file system requests. We've tried explicitly setting the identity on the affected app pool to use Local Service as well as a regular domain user. The issue persists regardless:
So naturally, our hope is that the reboot takes care of it... Perhaps the old password is stuck in a kerberos cache, but it's just strange since this app pool never used the ID as its identity, that it continues to show up.
We had a virtual directory that was using the ID in order to reach out to a CIFS share on the network. Once we changed that, the error ceased.
I have two ASP.NET web applications and in both I use EventLog.WriteEntry with a custom source name to write custom events to the application log.
Both on my programming machine and on the webserver this works in one of the applications, in the other it doesn't - I get a security exception:
[SecurityException: The source was not found, but some or all event logs could not be searched. Inaccessible logs: Security.]
I am wondering why this happens, both web applications are identical (as far as I see it). The only difference from a security point of view is the authentication mode: one uses Forms (there Eventlog.WriteEntry works) and one uses Windows (here it doesn't work). Can this be the reason?
Giving "everyone" read access to the application log doesn't change this behavior.
Your problem on Windows authentication mode essentially similar with these problems:
System.Security.SecurityException when writing to Event Log
System.Security.SecurityException: The source was not found, but some or all event logs could not be searched. Inaccessible logs: Security.
The exception means that your web app tried to write on event log using a value given to "source" which has not been registered due to insufficent privilege on corresponding account.
When using Windows authentication mode to perform event log tasks, you need to give read permission on NETWORK SERVICE account on eventlog\Security key. Below are these steps to do:
Open Regedit (Registry Editor).
Go to HKLM\SYSTEM\CurrentControlSet\services\eventlog\Security
Right click the branch, select "Permissions".
Click "Add", find RDN named NETWORK SERVICE or type it directly, then add the account.
Under "Permissions for Network Service", check "Read" or "Full Control" to give the read permission, then apply the change.
Restart your application pool on IIS host.
If it still not enough, do actions below:
Open IIS Manager. Check the Identity column on Application Pools section, it should given LocalSystem or NetworkService.
When you need to change Identity, right click the application pool with Windows authentication, choose Advanced Settings.
Under Process Model, change ApplicationPoolIdentity to LocalSystem or NetworkService, apply your edit and restart the application pool.
NB: NetworkService identity is more preferred to LocalSystem due to security vulnerability reasons.
Also you may try setting <trust level="Full" /> in web.config file, depending on security consideration.
If all solutions above still won't work, set Visual Studio on development machine or deployed app on web server to run as administrator privilege, gaining full access to Windows authentication event log. After all, it depends of your choice to ensure proper security measure was applied.
I want convert to application my Asp.Net app.
I created application Pool what use service account. And want "convert to application" under this application pool.
BUT if i check connection setting show me error "Invalid application path".
When I set my personal user account in to "connect as"
everything was alright.
Question : what must fulfill service account to right use? Or any suggestion whot I must change, try or verify?
You should be able to use the Setting "ApplicationPoolIdentity" for Identity in the Pool Advanced-Properties.
Usually your folder security settings must grant read, execute, browse folder and read for the local group IIS_IUSRS.
if you did both, the conversion to application should work.
Ive created a app in asp.net using c# that needs to create folders on a number of network shares. Ive configured the app pool account to use a domain account and given that domain account the correct permissions to the network share folder. When i run my code im getting the following exception. Any ideas?
Exception: System.ComponentModel.Win32Exception
Message: Logon failure: unknown user name or bad password
You should create an account on the network that has the relevant access to that share and then set your application pool to use that identity.
This way, all requests from your application will appear to be that user.
Take care with this approach, however, as if anyone changes the password to that account, you will need to update it within your IIS
OK seems I've been a bit of a chump. Seems there was some code I wrote (cant remember doing it) that impersonated the account I had set for the custom app pool but with the old password. Simply commented out the code and it now works as expected. Note to self!!!!!! Must read stack trace more carefully in future.
Apologies for wasting your time
I am trying to write to a file on a server (web05) from a classic asp site running on Windows 2008 serer on IIS7 (webadmin). This fails and web05 logs an anonymous logon attempt during the course of the save operation.
Webadmin's site is running on an app pool in classic mode with a domain user as the process account. The process account has rights to "Trust this user for delegation to any service (Kerberos only)". The same applies for the web05 and webadmin servers.
The site is using Windows Authentication and the idea is that when I log on the site with my domain user, the rights of my user should define what I am allowed to do in the context of the IIS site. If I turn on Basic Authentication, everything works fine.
I have also used setspn.exe to add an SPN for the URL. If I type setspn.exe -L webadmin, I get:
HTTP/webadmin.companyname.com
TERMSRV/webadmin
TERMSRV/webadmin.companypub.local
HOST/webadmin
HOST/webadmin.companypub.local
So from what I understand the SPNs are set up correctly.
If I run processmonitor on webadmin while the save operation is executed, it says that the process is indeed impersonating my domain user - but getting "Access denied" (and as I said before, web05 logs an anonymous logon attempt).
Any idea what causes this?
Kind regards,
Simon
It sounds to me like you're a little confused over impersonation. The process isn't impersonating the domain user account its simply running as that user. There is a difference.
When a request arrives into ASP it will then impersonate a user and the thread handling the request will be running under the security token of the impersonated user. Its quite possible to have the same process impersonating multiple different users in multiple threads. In most cases where the anonymous user access is enabled this user is the Guest level IUSR account. Its most likely that its under this user your code is attempting and failing to run.
However if anonymous is turned off for the resource being accessed or the IUSR account does not have access to the resource then the a 401 response is sent back, with some indication of what authentication protocols it will accept. The browser may then attempt to authenticate the connection using either the current users credentials or request some credentials from the user.
You don't specify exactly how you are attempting to save file. Its worth pointing out couple of things though.
ASP code exection which may subsequently result in an access denied will not use the above mechanism to try to resolve the user.
Once a connection is authenticated it often continues to be re-used for subsequent requests (which is counter-intuative to the knowledge the HTTP is a "connection-less" protocol).
I am trying to clean up my previous questions. This answer is not sufficient to answer the question above, but I concluded that it is better to provide some insight than none. If op disagrees, please take necessary action.
This is a way back - but I recall wanting to run kerberos authentication on this app. The problem turned out to be that I tried to do kerberos outside the firewall. The app would work fine within the domain and firewall of the server's home domain but failed whenever requests came from outside.
I did a lot of chatting with an Irish technician in Microsoft, and he taught me a little about the limitations when using Kerberos. The reason I wanted to use Kerberos was that I didn't like the thought of Basic Windows authentication being unencrypted.
Good luck with your Kerberos quest :-)
I ran into this same issue and it turned out to be a simple change to the application pool. If enable 32-bit applications is set to FALSE then I recieved a prompt to login to the machine. Setting this value to true fixed the issue.