Sorry this question isn't really for Getting Started Forum, but there was no Nintex for SharePoint. Only Nintex for Office 365.
Anyone seen this error before? For a SQL Request action on a Nintex Form (classic) when testing I get...
Test Result
Unable to obtain master key.
Guessing Master key to access Secure Store Service to get target application ID...
Cheers,
Shane
Solved! Go to Solution.
Worked this one out. Was a SharePoint 2016 bug with Secure Store Service and updating/refreshing the master key.
The action calls the secure store web service which tries to get update/refresh the key and fails when it can't.