First, you have 5 slashes after the
file:
protocol. You need 2 slashes for a UNC path.
<embed id="srcfile" src="file://isc-vmfs01/ClaimsFiles/PDF/User_Manual.pdf" wid...
If the user on the client side doesn't have read permissions to that file share and the folder path under it they're not going to be able to download the file. The HTML code in the browser runs as the user, not the server.
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