Article ID: 119555, created on Jan 10, 2014, last review on Jan 10, 2014

  • Applies to:
  • Plesk 11.0 for Windows
  • Plesk 11.5 for Windows


After domain migration from Plesk Panel 11 to Plesk Panel 11.5 all content has been uploaded successfully, but migrated site opens without any styles and javascripts.


Conflicting MIME types between server-level and site-level IIS configurations.


If you are using custom web.config you should check that you are not loaded MIME type, which has already been inherited from server-wide MIME types settings.

To check it you should open "MIME types" for migrated domain, if your web.config has conflicting records, you will get an error like:"Cannot add duplicate collection entry of type 'mimeMap' with unique key attribute 'fileExtensions' set to '.mp4'".

You can fix this issue, by removing next entries from web.config file in site directory:

      <mimeMap fileExtension=".mp4" mimeType="video/mpeg" />

Search Words


mime types

500 internal server error

a914db3fdc7a53ddcfd1b2db8f5a1b9c 56797cefb1efc9130f7c48a7d1db0f0c 514af229ae32522202a910a2649c80fb 85a92ca67f2200d36506862eaa6ed6b8 bd7fc88cf1b01f097749ae6f87272128 46a8e394d6fa13134808921036a34da8

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