Server 2016 to Server 2019 adprep error "Failed to verify file signature: error 0x800b0109."
Hello, Running ADPrep in order to begin the process of upgrading 2016 to 2019 I get the following error: "Verifying file signature Failed to verify file signature: error 0x800b0109. ERROR: Import from file D:\2019\support\adprep\sch88.ldf failed. Error file is saved in C:\Windows\debug\adprep\logs\20180501005227\ldif.err.88." I'musing server 2019 LTSB, the 2016 datacenter server is fully updated. Is there an .isothat has the sch88.ldf file with the correct signature? Any other ideas on how to resolve this issue? Thank you