Could not load file or assembly Microsoft.Dynamics.Nav.Management.dll HRESULT: 0x80131515

My Errors & My Solutions
My Errors & My Solutions - It Could Happen To You

Information
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Could not load file or assembly ‘file:///C:\Program Files\Microsoft Dynamics NAV\70\Service\Microsoft.Dynamics.Nav.Management.dll’ or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515)
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OK
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Symptoms
After an update with a new build of Microsoft Dynamics NAV the Microsoft Dynamics NAV Administration tool does not work showing an error message as above.

Solution:

1. Move the file Microsoft.Dynamics.Nav.Management.dll from the folder

   C:\Program Files\Microsoft Dynamics NAV\70\Service\

   into your Desktop

2. Right-click on the file, select Properties and in the General tab push the button at the bottom Unblock
3. Move the file Microsoft.Dynamics.Nav.Management.dll from the Desktop to the original folder

   C:\Program Files\Microsoft Dynamics NAV\70\Service\

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Could not load file or assembly Microsoft.Dynamics.Nav.Management.dll HRESULT: 0x80131515
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