USB BLaster !!!quartus not detecting usbblaster

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Your welcome. Glad to hear it worked for you too! :D

I don't think this is any fault of Altera's as such. It something that I have had to do for a number of apps that I run to function correctly. Being device related it must be calling a system DLL that requires some degree of access not associated by the win 7 administrator.

Hopefully the Quartus developers can look at what is causing it and circumvent the security level requirements somehow.

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Thank you for the solution! Running the tool as an administrator did the trick.

For future installs of Quartus versions, instead of just double clicking the setup file, right click the file and run as administrator. This may solve the problem, and there wouln't be any need to constantly open quartus as an administrator.