Before installing SignDoc for Adobe Reader please ensure that your user account has administrative rights. In the next step please disable protected mode and enhanced security in Adobe Reader. You will find it in Preferences > Security (Enhanced).
After installing SignDoc for Adobe Reader you should define a default signing method:
Step 1: Go to Preferences > Signatures > Digital Signatures ("Creation & Apperance") and click more
Step 2: Select "SOFTPRO DigSig Security" and click OK
Keywords: SignDoc for Adobe Reader, Adobe Reader XI, DigSig, Installing, Preferences, SD4ADS, SD4ADR