Outlook add-in installer fails with an error code 2869


When installing Pronestor Outlook add-in, the installer fails with the following message:

"The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2869"



It can be due to:

  • Two versions of Outlook has been installed on same PC
  • Lack of permissions to run and install installation packages
  • Ensure that you run the latest add-in (this is a known issue for older installation packages)


How to solve

  • Make sure only one version of Outlook is installed and running on the PC (re-start PC after uninstall of duplicate Outlook)
  • Open a command prompt with administrator permissions, and run the installer from within this command prompt
Was this article helpful?
0 out of 0 found this helpful
Have more questions? Submit a request


Powered by Zendesk