>If the Web Server is not the same computer as the one you used to built the DLL, you might need to register the DLL (with REGSVR32) in the Web Server.
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Hi Hector. All the DLLs are registered. In VFP7 command window this works fine:

ox = createobject( "esiwebdltest.app")

Just IIS that cannot create it. I thought maybe the runtime files were required and I didn't have them installed, but they are there.