Hi Jon,

thanks for your response.. We made the change to http security.. It was indeed set to 'all process' and not 'admin only' as was the case in our 17.3 test instance.. the one problem that remains is while our data uploads works in our test with all versions attached to postgres db ( tested to 32k records), it does not work with MSSQL server on Labkey. gave a '500 internal error' perhaps related to some constraint in MSSQL as I think we discussed earlier.