When trying to launch the MOVEitDMZ website using  https://localhost the admin is getting the 500 Internal server error and no additional information:


When looking at the Windows Event Viewer, under the Windows logs > Application the error
"Could not load all ISAPI Filters for the site 'MOVEITDMZ'. Therefore site startup aborted" is being logged. 

1. Confirm the locations of the wwwroot folder and MOVEitISAPI folder for the MOVEit Transfer application: 
   1. Open the MOVEit Transfer Config Utility > Paths tab and make a note of the Web App and ISAPI directories.
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   2. Go to the ISAPI directory (by default, it is C:\MOVEitTransfer\MOVEitISAPI), and confirm that the following files are there:
      1. MOVEitFilt.dll
      2. MOVEitISAPI.dll
2. Confirm the IIS settings below in the IIS Manager > expand Sites > moveitdmz site:
   1. Click Advanced Settings... on the right > confirm that the Physical Path matches the correct Web App directory pointing to the wwwroot folder.
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   2. Double click on the ISAPI Filters icon > select the MOVEit Filter > Edit... > ensure the Executable path points to the MOVEitFilt.dll file in the correct ISAPI directory.
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   3. Expand the moveitdmz site > click MOVEitISAPI > Advanced Settings... > ensure the Physical Path matches the correct ISAPI directory.
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   4. Still under MOVEitISAPI > double click the Handler Mappings icon > select MOVEitISAPIExtension > Edit... > ensure the Executable path points to the MOVEitISAPI.dll file in the correct ISAPI directory.
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3. Open the command line as an administrator, then execute an reset IIS command by typing IISRESET
4. Check now to see if the website can be reached using https://localhost
5. Process complete.