When opening the Helm login screen, I get the following error:-
The ConnectionString property has not been initialized.
followed by a stack trace.
This usually means that the Application Pool that the Helm IIS website runs under, does not have the correct permissions.
1.) Open IIS and expand the Application Pools tree.
2.) Right click on DefaultAppPool and choose Properties.
3.) Click the Identity tab.
4.) The identity should be a "Predefined" identity using the "Network Service" account.
5.) If this isn't the case, set it to use the settings in step 4.
6.) Click OK to complete.
If this does not solve your issue, please contact support.