Error checking serial number Follow


Unable to verify your serial number

When installing Sales and Marketing Pro or Marketing Plan Pro 11.0 powered by Duct Tape Marketing, you may encounter an error message indicating a problem verifying your serial number.


In most cases, there is not an issue with the serial number at all and this message just indicates a problem with the .NET Framework on this computer. Taking the following steps will resolve this error:

Remove the current .NET installation files

  1. Click the Windows Start menu, point to Settings, and then click Control Panel.
  2. Double-click on Add/Remove Programs.
  3. This list is alphabetized; scroll down to the Microsoft area.
  4. Select anything that starts with Microsoft .NET
  5. Click the Remove (or Change/Remove) button and follow the steps to remove that component.
  6. Repeat steps 2 and 3 until all Microsoft .NET installations are removed from the computer.
  7. Close the Add/Remove Programs utility and Restart the computer.

Having problems with this step?

If you encounter an error when trying to remove the .NET components with the Add/Remove programs utility, take the following steps instead (more information):

  1. Click the following link to download the .NET Clean-up Utility:
  2. When prompted, choose to Save this file to the Desktop of the computer.
  3. Once the download has completed, close any open programs and run thecleanup_tool.exe
  4. Accept the license agreement and then choose to clean up .NET Framework - All Versions
  5. Click the Cleanup Now button
  6. Once the Cleanup is complete, close the utility and then install the latest .NET Framework (see below)

Download the latest .NET Update from

  1. Go to Microsoft's site at:
  2. Click the Download button to download the dotnetfx.exe file.
  3. When prompted, choose to Save the file to the Desktop of your computer.
  4. Once the download has completed, run the dotnetfx*.exe file and follow the steps to install the .NET update.

Install your Palo Alto Software

Once the .NET update has been installed, run the installer for the software (smpenu11.exe or dtmenu11.exe) again to install your software.

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