Answers ( 4 )

  1. On top of all the above checks you may want to check the site to site group membership if you have hosted the MP on remote server

  2. Verify in IIS Logs and check the subcode fro 500. Is it 500.0 or 500.19. However usually a clean re-installation of the role should resolve this issue.

  3. Can you provide more details …

    500 error means the IIS server web portal is not reachable or it’s down..

    Try to restart IIS services
    Launch IIS console and try to browser through MP folder …

    More details

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