SecureAuth version affected: All iterations of SecureAuth IdP
TRX test button will fail, causing numerous errors such as transaction logging, key.file updating, and cloud connectivity.
Microsoft.Web.Services3 causes an issues due to old configurations being mismatched
Remove Microsoft.Web.Services3 block from the web.config on the respective realms that report the issue.
In our case here, we see that the test connection button fails via SecureAuth0 web.config.
Upon opening the web.config, do a search for microsoft.web.services3, and you will see this section.
Take a backup of the web.config prior to making these changes!
Please feel free to delete this section entirely from the web.config; save it, and your transaction test should now pass!