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Forums / Bugs & Issues / "Value cannot be null" Error on Sitefinity Backend Log-in Page

"Value cannot be null" Error on Sitefinity Backend Log-in Page

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1 posts, 0 answered
  1. Andrew
    Andrew avatar
    6 posts
    16 Mar 2012
    13 Sep 2012
    Link to this post
    I randomly started receiving a "Value cannot be null exception" when trying to access the Sitefinity backend log-in screen (see attached screenshot).    I receive this error for both of the following cases: 
    http://localhost:37499/site/Sitefinity/   (direct)
    http://localhost:37499/site/Sitefinity/Authenticate/SWT?realm=...  (redirected from other page)

    I can't pinpoint exactly when it started happening, but it was soon after I changed the permissions of a page to Authenticated users.  I have since reverted this change but am still experiencing the issue.  I now have to use the log-in page I created within my web site and log-in as an Administrator in order to do any backend administration.

    My site is running on Sitefinity 5.1.3210.0 with IIS 7 (via Sitefinity Project Manager) and using Claims Authentication.

    I have searched the forums and found the following thread which seems like the same issue I am experiencing. However, none of the suggested solutions seem relevant in my case. 
1 posts, 0 answered