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  • mikef 1 post 71 karma points
    Dec 05, 2017 @ 02:05
    mikef
    0

    Blank page on Umbraco Back Office

    I recently installed the latest version of Umbraco (UmbracoCms.7.7.6) on my web hosting site. I had a few issues with install, mostly to do with setting permissions, but eventually I got it installed and up and running with the demo site. I am using a SQL Server backend.

    The problem I am having is that when I try to log in to the back office, I get a blank page that just shows {{menuDialogTitle}} at the top. I can't even get to the login prompt.

    The demo website that has been installed works fine though. I can browse it, all images and links work fine, etc.

    The browser developer console is giving me the following error

    Error: Argument 'Umbraco.MainController' is not a function, got undefined at cb (DependencyHandler.axd?s=L3VtYnJhY28vbGliL2px...=Javascript&cdv=1:3)

    I checked that the js files were all there, in particular the angular ones.

    The umbraco.controllers.js file is in the folder /umbraco/js. So I'm not sure why it is complaining.

    Any help would be appreciated.

    Thanks,

  • Dan Diplo 1554 posts 6205 karma points MVP 5x c-trib
    Dec 05, 2017 @ 12:39
    Dan Diplo
    0

    It's going to be hard to diagnose, but a few things to try:

    Ensure you have all copies of essential Umbraco files on the server - if you can diff with the contents of a zip download then you may notice if you have any files missing.

    Run the site with debug="true" if not already - this stops Umbraco from bundling back-end files.

    Ensure Umbraco/IIS has write permission to App_Data folder. Are you able to check if /App_Data/TEMP/ contains files? If it does, you can also clear this folder out, as it removes all cached indexes and JS.

    Are you able to look in /App_Data/Logs/ at the files there? These may contain some useful error messages.

    You can also extend the logging by editing /config/log4net.config and changing priority to debug ie. change

    <priority value="Info" />
    

    to

    <priority value="Debug" />
    
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