The unknown publisher may have come from Microsoft, but is not recognize to produce bugs or glitch probably. I think, a verification or authentication certificate should be updated to make this computer behave normal. Epson WorkForce Pro WP-4540 Ink Cartridges If there is an error in the verification or authentication certificate, I or my computer can be accuse as a copyright violator. I am an authenticated religious reporter with free speech rights, free religious expression rights, fair use rights protected[…]