Some customers reported the following error with the Qlik MongoDB connector (within the ODBC connector package) after upgrade to Qlik Sense version November 2020:
Error: Connector reply error: Unable to connect to database:
20201216T110846.906+0100 Error message:
20201216T110846.906+0100 Please check the values for Username‚ Password‚ Host and other properties.
The issue could be seen and also could be reproduced when you use a non admin MongoDB user in order to reload the data from the MongoDB database (version 3.6).
For more information please check the screenshot:
![mongo DB test QS Nov 2020 - non admin user v01.PNG mongo DB test QS Nov 2020 - non admin user v01.PNG](https://community.qlik.com/t5/image/serverpage/image-id/47322iD2814310B652EE54/image-size/medium?v=v2&px=400)
When you replaced the user for the MongoDB connection with an admin user the reload was working again:
![mongo DB test QS Nov 2020 - admin user v01.PNG mongo DB test QS Nov 2020 - admin user v01.PNG](https://community.qlik.com/t5/image/serverpage/image-id/47323i337A7BABD6338BFA/image-size/medium?v=v2&px=400)
Environment
Cause
As a result of the investigation:
1) On the reproduction environment we had two users with the same name (here for example "tester") specified in two DB: "admin" and "test_db1" (they had different passwords).
2) Driver from June 2020 release(v. 2.3.7) tried check credentials first for a "tester" from admin DB (as a default) and next from "test_db1" and as credentials fit ok connect by this user.
3) After fix: Driver from November 2020 release(v. 2.3.12) tried check credentials for "tester" from admin DB (as a default) then connection failed due to credentials does not fit for "tester" from "admin" db.
Resolution
To specify a user from which particular DB we are trying to use we need to use the additional parameter "AuthSource", like on screenshot:
![image (2).png image (2).png](https://community.qlik.com/t5/image/serverpage/image-id/47324iE0C403145514548F/image-size/large?v=v2&px=999)