Microsoft Update KBs that have this known issue: Kepware and PTC are currently evaluating and validating initial test findings and guidance from Microsoft. Ensure that client server applications interacting with KEPServerEX do not programmatically call CoInitializeSecurity using RPC_C_IMP_LEVEL_NONE and RPC_C_AUTHN_LEVEL_NONE. Ensure Use DCOM for remote security is checked. Prevent OPC Quick Client from calling CoInitializeSecurity by enabling the use of DCOM settings. Configure DCOM according to the Remote OPC DA Quick Start guide. Under the OPC Connection Security group, verify the Use DCOM configuration settings option is enabled (default). Right-click on the KEPServerEX Administration icon in the System Tray and select Settings. Solutions: Prevent KEPServerEX from calling CoInitializeSecurity by enabling the use of DCOM settings. OPC Quick Client cannot browse to a local instance of KEPServerEX. Compare price, features, and reviews of the software side-by-side to make the best choice for your business.
OPC DA Client driver can no longer connect to other OPC DA servers. Problems after Windows Update : Client applications can no longer connect to KEPServerEX. Microsoft has noted performance implications after applying these patches, so testing specific applications and interfaces is highly recommended. CAUTION : It is important to independently test and validate all Microsoft patches in the actual environment to ensure the proper functioning. However, it does have an option to disable DCOM switch to a pre-configured CoInitializeSecurity call.
Fortunately, Kepware products default to using the registry for setting up DCOM and are not susceptible to the known issue in the update. If a process does not call this function, security is set according to the values saved in the registry and adjusted using Component Services.
CoInitializeSecurity is a COM function that is optionally used to register and set security values for a process. Details Microsoft updates (specific numbers below) contain a known issue that causes a programmatic call of CoInitializeSecurity to fail if attempting to set Default Authentication Level to RPC_C_IMP_LEVEL_NONE or the Default Impersonation Level to RPC_C_AUTHN_LEVEL_NONE.
The performance testing was performed on Windows 7 Pro using the Haswell processor architecture. Different hardware platforms can be impacted differently, but Kepware's limited testing revealed no noticeable performance degradation. Although not exhaustive, Kepware's testing showed no noticeable difference in driver performance after installing the Microsoft patches.
Windows 10 version 1507 Enterprise ? Introduced in: KB4056893 ? Fixed in: KB4075199 Windows 10 version 1511 ? Introduced in: KB4056888 ? Fixed in: KB4075200 Windows 10 version 1607, Windows Server 2016 ? Introduced in: KB4056890 ? Fixed in: KB4057142 Windows 10 version 1703 ? Introduced in: KB4056891 ? Fixed in: KB4057144 Windows 10 version 1709 ? Introduced in: KB4056892 ? Fixed in: KB4073291 (x86), KB4058258 Windows Server 2012 Standard ? Introduced in: KB4056896, KB4056899 ? Fixed in: KB4057402 Windows Server 2012 R2 Standard ? Introduced in KB4056898 ? Fixed in KB4057402 Performance There were some initial reports of some applications having degraded performance following the installation of the patches. The below solution is only necessary if the recommended patches are not installed. Below is a summary of initial patches and updated patches that do not suffer the communications problems. Since the original publication of this article, Microsoft has released new patches without these problems. These updates can affect communications and client access. Microsoft has released updates to the operating systems of affected devices to tighten security and reduce risk. Local access is required to perform this exploit. Background A discovered vulnerability in processor chips can allow malicious programs running with few permissions to access information those programs do not own and should not access. The Windows Updates, however, can impact OPC DA, OPC AE, and OPC HDA communications with KEPServerEX. If you have not yet done so, please register your software before proceeding.Not directly.
Vision Sensors Driver Download Windows 7 Driver Downloads For Windows 7Īccess to certain drivers and SDK updates are restricted to Teledyne DALSA customers that have registered their development package (SDK). When using CX-Supervisor as OPC DA client with KEPWare KEPServerEX OPC Server the following error may be logged in the CX-Supervisor Error log: An Error.