Issue
After updating to Unity 11.1 within a virtual machine, the M340 fails to connect when using the USB driver. However, there is
no issue with connecting to a Quantum PLC.
Product Line
Unity, M340
Environment
Windows 7, 10
Resolution
The reason could be due the fact that the windows operating system is not properly updated to support the SHA-2 signed
kernel mode driver. The Schneider Communication drivers installed with Unity Pro V11.1 has been signed with SHA-2
certificates (see https://technet.microsoft.com/en-us/library/security/2880823.aspx for details). The USB driver that is installed
with Unity 11.1 is also considered to be a kernel mode driver. As of May 2016, Microsoft required the Kernel-Mode-Drivers to
be signed with an SHA-2 certificate;
To resolve the issue:
After updating to Unity 11.1 within a virtual machine, the M340 fails to connect when using the USB driver. However, there is
no issue with connecting to a Quantum PLC.
Product Line
Unity, M340
Environment
Windows 7, 10
Resolution
The reason could be due the fact that the windows operating system is not properly updated to support the SHA-2 signed
kernel mode driver. The Schneider Communication drivers installed with Unity Pro V11.1 has been signed with SHA-2
certificates (see https://technet.microsoft.com/en-us/library/security/2880823.aspx for details). The USB driver that is installed
with Unity 11.1 is also considered to be a kernel mode driver. As of May 2016, Microsoft required the Kernel-Mode-Drivers to
be signed with an SHA-2 certificate;
To resolve the issue:
- Ensure that Window operating system has the latest security updates installed.
- Ensure that the security update found at https://technet.microsoft.com/en-us/library/security/3033929.aspx is installed on the Virtual Machine's Windows7-SP1 64-bit system!
Julkaistu: Schneider Electric Suomi
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