Limits of the Looker connector

Limits and troubleshooting practices for the Looker connector.

The Looker connector helps you add a Looker Explore as a data source for a Looker Studio report.

Looker instance requirements
Support of Looker Studio features
Troubleshooting
Report a problem

Looker instance requirements

To set up a Looker data source using the Looker connector in Looker Studio, your Looker instance must meet the following requirements:

The instance must be Looker-hosted. The Looker Studio connector is not available for customer-hosted Looker instances.
The Looker Studio BI connector must be enabled in the Platform section of the Admin panel.
The following minimum Looker versions are required:

Type of Looker instance	Hosting provider	Minimum Looker version
Looker (Google Cloud core)*	Google Cloud	23.6
Looker (original)	AWS, Azure	23.4
Looker (original)	Google Cloud	22.16

* Looker (Google Cloud core) instances must use a public IP or a private IP (private services access) and public IP network connection.

Support of Looker Studio features

The following Looker Studio features have limited or no availability for Looker data sources:

The scheduling email deliveries and downloading reports functions are disabled for reports with a Looker data source connection. Although the option to perform each action is available, the delivered and downloaded reports will not contain data.
Calculated fields are disabled for Looker data sources.
Exceptionally large Looker models (generally those with more than 100 Explores) may cause long delays or timeouts during the data source creation process.
You can include up to 20 dimensions and up to 10 in metrics in a table visualization.
There is a 5-minute query timeout.
Users who run queries from a Looker data source are subject to the Looker download_with_limit permission, which restricts the number of rows that a user may load to 5,000.

Troubleshooting

Issue	Resolution
HTTP 400 error in Looker Studio	Ensure that the the Looker Studio BI connector is enabled in the Looker instance. Check that account linking was successful.
Cannot connect a Looker instance	Check that the Looker instance URL is correct and that there are no trailing spaces. The Looker connector is valid only for specific configurations and versions of Looker instances. Looker instances that have the Enable Allowlist feature enabled may require special setup. Contact Support. Ensure that the API Host URL in the Looker instance is configured properly.
No Explores found	Select a different Looker model.
Existing report charts break	Ensure that the Looker Studio connector is enabled in the Looker instance. Looker instances that have the Enable Allowlist feature enabled may require special setup. Contact Support. Ensure that the API endpoint for the Looker instance is configured properly.
Looker Studio displays an error when trying to fetch Explore data	Contact Support or visit the Looker Studio Community.

Report a problem

Report problems with the Looker connector to the Support team.

If you're a Looker Studio Pro customer and experience problems that are related to Looker Studio features other than the Looker connector, contact Cloud Customer Care.

If you're using the free version of Looker Studio, post your question or issue in the Looker Studio Help Community.

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