# Mongo db connection

**URL:** <https://discourse.nodered.org/t/mongo-db-connection/47217>\
**Category:** General\
**Created:** [16 June 2021 05:34 UTC](https://discourse.nodered.org/t/mongo-db-connection/47217 "2021-06-16T05:34:53Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![OmkarNodered](https://avatars.discourse-cdn.com/v4/letter/o/90ced4/32.png) [@OmkarNodered](https://discourse.nodered.org/u/OmkarNodered)\
**Post date:** [16 June 2021 05:34 UTC](https://discourse.nodered.org/t/mongo-db-connection/47217/1 "2021-06-16T05:34:53Z")

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I am trying to connect to "mongo-db in" node but it is showing  
MongoError: Authentication failed.

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**Author:** ![zenofmud](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/zenofmud/32/316_2.png) [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Post date:** [16 June 2021 09:53 UTC](https://discourse.nodered.org/t/mongo-db-connection/47217/2 "2021-06-16T09:53:42Z")

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what shows up in the node-red log when this happens?  
What authentication do you have setup?

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [15 August 2021 09:54 UTC](https://discourse.nodered.org/t/mongo-db-connection/47217/3 "2021-08-15T09:54:07Z")

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