Domino 8.5.1 unable load 64-bit external DLLs

HCL Domino Domino Forum
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I think Domino 8.5.1 is maybe having problem loading 64-bit DLLs. Recently we upgraded our server to 64-bit everything. 2008 64-bit server, 64-bit Domino 8.5.1 server. We then noticed that one of our agents that loads an external DLL was not working. We found out that the DLL was 32-bit (which ran fine in 32-bit environment) was not loading. We went to the vendor and upgraded to 64-bit but was still having problem loading the external functions (Declare Function … Lib “…” (ByVal …)). We then wrote a simple 64-bit VB app to see if it would run vendor’s 64-bit version. Using the identical code from the Domino agent it ran just fine in our VB test app. Facts seem to point that Domino is not loading 64-bit DLLs properly.

Anyone have this problem?

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Subject: Does not load 64-bit DLL on Notes client also

BTW, thinking that it maybe a Domino server security issue I tried to see if it runs on the Notes client. It’s the same problem with the Notes client.