Kepware The Installer Was Unable To Find Required Root Certificates Exclusive [top] < GENUINE >

Select the signature in the list and click > View Certificate . Install to Root Store:

The word "exclusive" in the error message refers to the or a specific cryptographic context where the installer requires exclusive access to certificate validation resources. It implies that the installer attempted to build a certificate chain for validation but found that required root CAs were either:

Modern installers for PTC Kepware software are cryptographically signed to guarantee security and prevent tampering. When you launch the executable file, the Windows operating system tries to verify this digital signature against its built-in database of trusted authorities.

Before you spend time on certificates, make sure the installer file itself isn't corrupt: Right-click the .exe installer and select . Go to the Digital Signatures tab. Select the signature and click Details .

Solving "The Installer Was Unable to Find Required Root Certificates" in Kepware

Navigate to: Computer Configuration > Policies > Windows Settings > Security Settings > Public Key Policies .

Right-click the downloaded .crt file and select . Choose Local Machine and click Next. Select Place all certificates in the following store .

If you are trying to install or update Kepware’s KEPServerEX and you’re hit with the error you aren't alone. This is a common roadblock, especially on industrial PCs (IPCs) or servers that are kept offline for security reasons. Why Is This Happening?

Maintain a folder on your industrial network containing the .CER files of the top 20 Global Root CAs. This saves hours of troubleshooting during future installations.

When installing Kepware products (such as KEPServerEX, ThingWorx Kepware Server, or various drivers), users may occasionally encounter a blocking error message stating:

: The simplest fix is to connect the machine to the internet and run Windows Update . This automatically refreshes the Trusted Root Certification Authorities store .

: If the machine is offline, you must manually install the required root certificates (such as those from GlobalSign or VeriSign ).

If the host system has disabled Windows Updates or runs an older OS image that lacks modern root certificates (such as updated VeriSign, DigiCert, or Sectigo roots), the validation process fails immediately.

Look for entries like these:

Open mmc.exe on the offline machine following the exact path outlined above ( Computer account > Local computer ).

For a precise diagnosis, examine the bootstrap.log file in one of the following directories, depending on your product version:

Depending on company security policies and network access limitations, use one of the following methods to resolve the error.

Upload the required third-party vendor certificates to distribute them domain-wide. Verification and Rerunning the Installation