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Frequent Visitor

Service Refresh Issue - data source pool?

I developed a pbix file that uses the Quickbooks connector as well as several dataflows.  There is also several tables containing the measures.

The file refreshes fine in the desktop. but after publishing the error message below appears on refresh.


I keep thinking it is a privacy setting but after resetting them to none, it still does not work.




Something went wrong
There was an error when processing the data in the dataset.
Please try again later or contact support. If you contact support, please provide these details.
Processing error: A request for a connection from the data source pool could not be granted. Retrying the evaluation may solve the issue.
Cluster URI:
Activity ID: b135bccf-9e86-429e-8f46-85b76a67dee0
Request ID: 9e532360-4357-6c76-e470-17eb5a2bb4db
Time: 2020-07-11 18:52:00Z

Regular Visitor

Please check the setting on your data sources. 

If the maximum number of connections is too low, you might see this error.

When you do the refresh, the data model initials several connections to your data sources. If the number of connections exceeds the allowed maximum number, error happens.


This is how I solved my problem in my SSAS tabular model.



Community Support
Community Support

Hi @DHawes,

It sounds like credentials issue, please double check on your dataset -> data source credentials to confirm you are use the valid credentials that same as you work with desktop side.

In addition, any specific configure or settings apply to your dataset? Some of the additional authorizations/requests will be blocked on power bi service side due to security reasons.


Xiaoxin Sheng

Community Support Team _ Xiaoxin
If this post helps, please consider accept as solution to help other members find it more quickly.
Super User
Super User

Hi there

To me that looks like there is a username/password combination for your data source in the power BI Service which might need to be updated?

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Power BI Blog

Is there a way to reset all of them so that all have to be established?

I have been trying but obviously not getting it right.
Does it have to do with the privacy settings?


Hi there

You would do this in the Manage Gateway in the Power BI Service.

Are you using the Standard Mode (Enterprise)r or Personal mode of the Gateway?

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Power BI Blog

As both sources are cloud (dataflows and quickbooks), no gateway is being used.

Hi there

Then the data sources should be under the dataset properties?

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Power BI Blog

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