You receive error 1722 while attempting to upgrade your Noah 4 installation.

Cause
This error appears because the Noah client cannot connect to the Noah server. This error can be caused by:
- different versions of the Noah server and Noah client
- not having a valid or correct license installed
Solution
To solve the problem:
- Install the update on your Noah 4 Server first. Then install the update on your Noah 4 client machines.
- Make sure that the Noah server has a valid Noah System license. Ensure that Noah System is able to launch on the Noah server PC.
- This error can also occur on a non-networked configuration of Noah if the 4.1 installation cannot contact the Noah server component on the machine. Most commonly this can happen because of an invalid or missing license file. To get around this error on a standalone Noah you will need to install Noah 4.0, verify it is licensed and launches, then upgrade to Noah 4.1.
IMPORTANT: Do NOT attempt to install Noah System on a PC where a Noah 4 compatible business system is installed. If you are running a Noah 4 business system, please consult your business system provider before attempting to make an update.