Contact your software vendor’s support team. Explain that you are receiving a "License UPK Not Found" error despite the file being present. They can verify if your support contract is active and re-issue the UPK file or license certificate.
Create a new upk.license file with exact syntax: license upk not found
It sounds simple, but accidental deletion happens. Check the Recycle Bin of the server or workstation where the license manager is installed. Look for files with extensions like .lic , .upk , or .key and restore them if found. Contact your software vendor’s support team