KepServerEX; Unable to load driver DLL siemens_s7_plus_ethernet

[SG_10690891]

Hello,

I have some problem with use of driver for siemens PLC on KepServerEx v6.

The server is unable to load the driver with this log message:

"Unable to load driver DLL 'C:\Program Files (x86)\Kepware\KEPServerEX 6\drivers\siemens_s7_plus_ethernet.dll'."

There is already a topic on the PTC support page but it's not enough precise for me (https://www.ptc.com/en/support/article/CS370652).

I uninstalled then installed the driver but it's always NG. The dll file is of course in the good directory.

Has anyone ever had the problem? 

OS: windows 7 SP1

KepServerEx: v6.13.250.0

siemens_s7_plus_ethernet.dll: v6.13.250.0

Thanks

[herve_husson]

Hello,

I had the same issue with one of our customers.

After trying the KB  (https://www.ptc.com/en/support/article/CS370652), the issue is still the same. So we go deeper on this problem.

My customer use the KepServerEX V 6.11, which was the first version of the Siemens S7 Plus Ethernet driver. He migrated to version 6.16.217, and on this version, he had the same problem as you.: "Unable to load driver DLL: C:\Program Files (x86)\Kepware\KEPServerEX6\drivers\siemens_s7_plus_ethernet.dll"

The initial issue was the Digital Signature of the dll "AGLink40.DLL". 

So, I checked on my laptop for the same dll, and the digital signature was good. I did an export off the certificate, and the customer imported it onto his server.

Once imported, the driver worked correctly.