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

"The installer was unable to find required root certificates exclusive."

If you encounter the message, "The installer was unable to find required root certificates," follow these steps in order to resolve the issue. Begin with the simplest, most direct solution and proceed to more advanced methods only if necessary.

If it says "This digital signature is OK," your system just needs the root certificates mentioned above. If it says it's invalid, download a fresh copy from the PTC Kepware website. Pro-Tip for Industrial Environments

During the installation process, the setup wrapper triggers a validation check against the operating system's local certificate store to verify that the installer is authentic and has not been tampered with.

If you're in a test/air-gapped environment and proceed: "The installer was unable to find required root

Select when prompted for the Store Location (this ensures all users, including the installer, can use it). Select Place all certificates in the following store .

If the error persists after these steps, check the installation logs located at C:\Program Files (x86)\Kepware\KEPServerEX\bootstrap.log for specific certificate thumbprints that are failing. You may also find detailed guidance on the PTC Support Portal regarding this specific installer failure. The Installer was unable to find required root certificates

Many admins disable these to "harden" the system, but it frequently breaks installers for signed drivers and industrial software. Summary for Success

: If manual installation fails, PTC Kepware Support recommends opening a ticket through My Kepware to receive the specific certificate chain files required for your server version. If it says it's invalid, download a fresh

Modern software installers use digital signatures to prove they haven't been tampered with. Kepware uses certificates issued by authorities like or Sectigo .

Network security may prevent the installer from reaching certificate revocation list (CRL) servers. www.ptc.com 💡 Quick Solutions 1. Run Windows Update

Then:

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. Select Place all certificates in the following store

The error message appears when the Windows operating system .

"The installer was unable to find required root certificates"

For older systems, like Windows 7, the community and vendors have developed specialized, all-in-one certificate patches. These are small utilities designed specifically to pre-load the necessary root certificates for KEPServerEX.