S7Plus driver issues after KB5037591 windows update

pablo.chamorro · Post by **pablo.chamorro** » Tue Jun 11, 2024 10:38 am

Hello all,

After this KB5037591 windows 11 update, the S7Plus driver is no longer able to run ir our 3.17P32 winccoa development machines. I attach de log file entry of the error:

WCCOAs7plus (1), 2024.06.11 09:50:31.114, PARAM,SEVERE, 68/s7plus, S7PlusDrv, start_oms, Error not coming from OMS+ (-9223281722282474646)

Maybe others functions/drivers are also afected, but in our case we are just having/seeing problems with the S7Plus. Anyone is having the same issues? Uninstall this update is not an option, any suggestion?

Thanks in advance!

pablo.chamorro · Post by **pablo.chamorro** » Tue Jun 11, 2024 10:49 am

I should have posted it in bugs/problems. Sorry for this.

leoknipp · Post by **leoknipp** » Tue Jun 11, 2024 4:26 pm

The problem only appears when you have installed WinCC OA 3.17 and a newer WinCC OA version on the same machine.
Within patches for WinCC OA 3.18 and 3.19 the OMS+ library was updated to fit OpenSSL 3.0.

To avoid this problem and the conflict of the OMS+ package you have to use an own machine to run WinCC 3.17.

Best Regards
Leopold Knipp
Senior Support Specialist

pablo.chamorro · Post by **pablo.chamorro** » Fri Jun 21, 2024 5:01 pm

Yes, we work with the 3.17P12 and we had to install the 3.19P11 to do the engineer workshop training.

Now that we finish the courses, i tried to uninstall both, 3.17 and 3.19 and install again the 3.17, but still the same problem. Any way to rollback this OMS+ library version? I'm not going to format our machines for this...

leoknipp · Post by **leoknipp** » Mon Jul 29, 2024 3:23 pm

Please check the installed programs on your computer in the Windows System Management.
Possibly you can find there an OMS+ installation and you do an uninstall of it.

Best Regards
Leopold Knipp
Senior Support Specialist

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