wwClient 10.0 and Configuration Best Practice

 wwClient is a diagnostic utility from AVEVA (formerly Wonderware) used to test communication between InTouch/System Platform and data sources like OPC or DA server. 

Before accessing any link in this document please see A NOTE ON UNBLOCKING         

Official links to the product hosted by AVEVA
WWClient Utility for InTouch 7.11 file version 7.11

WWClient Utility for InTouch 8.0 file version 52.8.0

Unofficial release 10.0 hosted by BOX

wwClient Utility for InTouch 10.0 file version 212.10.0

When saving a Connection(s) file failing to add .cfg to the file name, can corrupt the ConfigFile registry key.

This issue and resolution is addressed in TN WW187 WWClient will not allow a connection to be saved. 

For 64-bit environments the wwclient ConfigFile key can be found in the following path

HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Wonderware\wwclient\Config

Things to remember: 
The ConfigFile key gets created once a configuration is successfully saved.
You must add .cfg manually to the file name when saving.

If you are unable to address this issue via the registry you can modify and Load the following Connection(s) file: 

wwClientSampleConfig.cfg

From a text editor you can update the access name components and tagnames / register references manually.

Once saved you can Load the Connection(s) file.