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I am not able to install drivers for konica minolta c250 on windows 7 64bit. Windows XP is ok, but on Win7 i cant fill the User Authentication window (it is disabled as you can see on attached picture)... Any ideas how to solve this?

Thanks for help

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Same issue here for bizhub 420 – koppor Feb 8 '13 at 21:05

It's not turned on. Go to the printer properties in the control panel, and click the second last tab with the additional add-ons (I.e. finisher unit, etc). User authentication and account track are not settings retrieved automatically

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