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Mysterious disappearing DLL

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Robert Dickow

New Around Here



Posts:6
New Around Here




6/23/2019 4:00 PM

    Recently I started up a DNN site on my development server and it started having problems displaying the home page. (DNN 9.2.2 with 2 3rd party modules installed). Sporadically it would error out, and eventually show the plain DNN Error page with a back link to the site, which of course just resulted in the same error). I found that the problem related only to the default page, so it must be a module. At first it mainly happened when trying to enter Edit mode for the page, but eventually the error was consistent at every load. After reviewing the Admin logs, it reported that it couldn't load the Microsoft.Owin dll file. It was missing from /bin. I hunted down the DLL from another project, installed it in /bin, and everything worked again. I did nothing to the system that I can recall that would account for losing this DLL. Has this 'vanishing DLL' ever happened to anyone?

     






    Chris Hammond

    Growing Member



    Posts:51
    Growing Member




    6/23/2019 8:07 PM
      I feel like I experienced this with my DNNChat module back in the day, trying to see if I can jog my memory as to what the cause was.
      Chris Hammond Christoc.com Software Solutions
      With DNN since before it was DNN!
      Open Source Projects and Tutorials since 2003





      Daniel Valadas

      Advanced Member



      Posts:140
      Advanced Member




      6/24/2019 4:13 AM
        The first thing I would check is if there is a false positive from your antivirus.





        Will Strohl

        Veteran Member



        Posts:1241
        Veteran Member




        6/24/2019 11:24 AM
          In addition to the previous responses, it's also possible that another module was using the same DLL and you uninstalled it. If done fully correctly, the module would correctly remove all of its dependency files, including any DLLs it installed. I don't believe that DNN checks to see if other modules might be affected by that deletion. So, it could have been an accidental result of properly managing the website. :D
          Will Strohl

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