v2.7 upgrading to v3.0.560. Tried over the top installer and it bombed part way through with a premature ending which rolled back. Rebooted and v2.7 had been removed by the v3.0.560 installer leaving me with no AV installed at all. Manually deleted the Program Files\Eset directory and all registry keys I can find for Eset rebooted and retried just installing v3.0.560 using freshly downloaded installer off of Eset.com. Installation goes through to the Installing Drivers stage then promptly bombs with "ESET NOD32 Antivirus setup ended prematurely because of an error". No logs are created anywhere and the old "/test" switch doesn't seem to work on the present installer. One thing I did notice was that the setupapi.log file records the following each time I try to install: #-198 Command line processed: C:\WINDOWS\system32\MsiExec.exe -Embedding 04983A3CA223E8DD2C9C1ED24CCBD5DC M Global\MSI0000 #E361 An unsigned or incorrectly signed file "c:\program files\eset\eset nod32 antivirus\drivers\eamon\eamon.cat" will be installed (Policy=Ignore). Error 0x800b0110: The certificate is not valid for the requested usage. #-024 Copying file "C:\Program Files\ESET\ESET NOD32 Antivirus\Drivers\eamon\eamon.sys" to "C:\WINDOWS\system32\DRIVERS\eamon.sys". #E361 An unsigned or incorrectly signed file "C:\Program Files\ESET\ESET NOD32 Antivirus\Drivers\eamon\eamon.sys" will be installed (Policy=Ignore). Error 0x800b0110: The certificate is not valid for the requested usage. I an open to any suggestions!