If your Kepware server has internet access (or temporary access), this is the simplest fix.
. This issue arises when the host operating system lacks the modern root certificates required to verify the digital signature of the installer. Primary Solutions Apply Windows Updates
The exclusive resolution was simple:
Press Win + R , type certmgr.msc , and hit Enter. If your Kepware server has internet access (or
As he ran the installer, a error message popped up: "The installer was unable to find required root certificates." John was puzzled. He had checked the software requirements and ensured that his computer met all the necessary specifications. He tried running the installer again, but the error persisted.
By following the solutions in this guide—updating Windows root certificates, manually importing the missing CAs, or using advanced bypass switches—you will restore the ability to install Kepware on any industrial PC.
If you are trying to install or upgrade KEPServerEX and hit the wall with a "Missing Root Certificates" error, you aren't alone. This safeguard ensures that the installer you are running is authentic and hasn't been tampered with. Why this happens He tried running the installer again, but the
Restart the Cryptographic Services and reboot.
The error regarding the inability to find required root certificates during Kepware installation can usually be resolved by ensuring your system is up to date, manually installing required certificates, or obtaining specific guidance from Kepware's support team. Always follow best practices for security when handling certificates and software installations.
This error is highly common in isolated, air-gapped industrial environments, or on legacy machines running operating systems like Windows 7 or unpatched Windows Server editions. Why This Error Occurs air-gapped industrial environments
: If the error occurs post-installation during connection, use the OPC UA Configuration Manager
Method 1: The Command-Line Certificate Import (Recommended for Air-Gapped Systems)