SharePoint eDiscovery download error

 

When you tried to download/export searched query, you get an error below.

"Application validation did not succeed. Unable to continue"

If you open details, you would find and error saying blah blah has different computed hash and so on. 

Login to a SharePoint web front end server, locate a DDManager.exe.deploy file.

It should be under c:\Program Files\Common Files\microsoft shared\Web Server Extensions\16\TEMPLATE\LAYOUTS\ddm\1033\ddm

Copy the entire ddm folder including the “en” sub folder to your PC.

Remove tailing .deploy from the files, including files under “en” folder.

It should look like this:

From your PC, open up the eDiscovery case and export, select an export you want to export.

Right click “Download Results” button and select “copy link”

From your PC, Open a command line in admin mode, navigate to where the ddmanager.exe is.

Open the notepad and paste the link.

It should look like

https://sharepointsite.com/sites/ediscoveryname/blahblah ?url=https://xxxxxxxxxx&listID=yyyyyy&itemID=Z&download=True

 

From the command line run

DDManager.exe -url https://xxxxxxxxxx  -listId yyyyyy -itemId Z -download True -scriptable false

Download will start.