Kepware — The Installer Was Unable To Find Required Root Certificates Exclusive

If no results appear, you know you need Method 2.

: The most direct fix is to connect the machine to the internet and run Windows Update to automatically refresh the local Trusted Root Certification Authorities store.

This issue most frequently occurs in the following scenarios: If no results appear, you know you need Method 2

This issue is not limited to a single version of KEPServerEX. According to official PTC support documentation, the problem has been observed across a wide range of versions on several Windows platforms.

If the target machine has internet access or is connected to an internal Windows Server Update Services (WSUS) server, updating the OS is the fastest fix. According to official PTC support documentation, the problem

In conclusion, the Kepware error “unable to find required root certificates exclusive” is far more than a nuisance message—it is a reflection of the tension between industrial longevity and modern cryptographic trust models. It reminds us that software installation is not merely a file-copying operation but a ritual of mutual authentication between publisher, operating system, and user. As Industry 4.0 pushes even legacy plants toward secure, encrypted communication, errors like this will become increasingly common. The solution lies not in bypassing security but in understanding it: ensuring that the invisible roots of digital trust are as well-maintained as the visible cables and controllers on the factory floor. Only then can Kepware—and the automation it enables—operate with both reliability and integrity.

The error occurs because the system lacks the necessary root certificates to verify the digital signature of the Kepware installer. This is a security feature to prevent running malicious software. It reminds us that software installation is not

The "unable to find required root certificates" error is a security safeguard. By ensuring your Windows machine has the latest , you can resolve the issue and successfully install KEPServerEX. For more detailed support, you may need to open a support ticket on the My Kepware page to get specific guidance.