21 Replies Latest reply on May 7, 2014 7:43 PM by Xiaoyi Tong

    Installation Problems - does not contain valid signature

    CompoundFractured1764 Level 1

      Anything I download from exchange panel fails to install with "does not contain valid signature" and gives error code 1. I am using widows 8 with adobe cloud versions of products. I have tried many exchange products using photoshop 32 and 64 bit versions with the same error every time. I have tried re-installing the extension manager as well as the exchange panel with no effect. I have ran the programs as the administrator as well. I have tried disabling my virus software but nothing works.