Users cannot log on - no error message

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12/18/2014 12:44:38 PM
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Users cannot log on - no error message

I am having an issue where It appears I successfully log on to my site as an admin (the last logon date is updated in the user table), but I am never actually logged in.  When the screen refreshes after log on, it redirects me to the home page where I still have the "sign in" link at the top and do not have admin access to the site.  This happens with all user accounts.  The site will allow me to register a new user, and it stores them in the DB, but no user can log on successfully.  If I try to log in with an incorrect password, I get the log in failed message, but when using the correct credentials, it just redirects to the home page without logging me on.

I recently moved my SQL Server DB to a different server, but not sure if this caused the issue.  I pointed the application back to the original database, but the problem persists.

Any suggestions would be appreciated.

thanks

 

 

12/18/2014 12:58:22 PM
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Re: Users cannot log on - no error message

sounds like a failure to create the authentication cookie, login succeeds but the cookie is not created.

only a few things I know that cause that

1. having the site inside a frame or frameset with a different domain in the outer frame. web browsers will not let one domain see the cookies of the other domain. some hosts have weird setups like that especially things like "domain masking or forwarding" often do things like that.

2. software on the client machine could also block a site from setting a cookie, any security or privacy guard type thing or even some web browser toolbar plugin can be at fault.

the first cause would happen from any client machine, the second one can be ruled out by trying to login from another client machine on a different network or at least without the same software installed.

3. another possibility is if you have the settings configured so that cookies are only transferred when using ssl/https, then if you go to a page without https the cookie will not be sent in the request headers therefore not seen by the site. if you have an ssl certificate you should check the box in site settings to use ssl on all pages. if you don't even have an ssl certificate you can rule out this cause

 

12/18/2014 1:39:04 PM
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Re: Users cannot log on - no error message

Does this happen in all browsers or just IE?

If it happens in IE only, see this thread.

12/18/2014 1:56:56 PM
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Re: Users cannot log on - no error message

I figured it out.  Based on your suggestion #3, I reviewed the authentication section in the web config file to check for the SSL setting, and noticed someone had changed the authentication mode from Forms to Windows.  Changed it back and now everything works beautifully!

Thanks for pointing me in the right direction.

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