Resolve "Error 1721.There is a problem with this Windows Installer package" in DOC1 Designer


Customer is either upgrading or installing Designer and receives error

"Error 1721.There is a problem with this Windows Installer package. A program required for this install to complete could not be run. Contact your support personnel or package vendor."


There is a partial installation of Designer still on the PC when the install/upgrade is being run. 

This partial installation must be completely uninstalled before the installation/upgrade is run again.


UPDATED: November 15, 2017

The current repository (SQL Database and File Store) should NOT be deleted. 

You may use the Microsoft Fix-it program to uninstall the partial Designer installation.  The fix it program may be found here:

Once the Designer uninstall has completed, you may reinstall Designer using your media.  At the end of the installation, when the Repository Configuration Tool is shown, choose the option to "Upgrade Your Existing Repository".  Your repository should be shown by name in the drop-down menu.  Continue with the installation as normal.


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