ADF dataflow data Preview Error

zenbabasha33 — Tue, 15 Apr 2025 18:13:48 GMT

hi All,

I have data flow as seen below. all linked service and data set working fine and i can see the data preview but wheb i use the same linked service and dateset in the dataflow It throw error as shown below i am useing managed private endpoint to coonect the blob starga it is owrking for all pipe line. the ADF and the MI has staorgae account contributor role assigned.

Error:

at Source 'sourcedata': This request is not authorized to perform this operation. When using Managed Identity(MI)/Service Principal(SP) authentication 1. For source: In Storage Explorer, grant the MI/SP at least Execute permission for ALL upstream folders and the file system, along with Read permission for the files to copy. Alternatively, in Access control (IAM), grant the MI/SP at least the Storage Blob Data Reader role. 2. For sink: In Storage Explorer, grant the MI/SP at least Execute permission for ALL upstream folders and the file system, along with Write permission for the sink folder. Alternatively, in Access control (IAM), grant the MI/SP at least the Storage Blob Data Contributor role. Also please ensure that the network firewall settings in the storage account are configured correctly as turning on firewall rules for your storage account blocks incoming requests for data by default, unless the requests originate from a service operating within an Azure Virtual Network (VNet) or from allowed public IP addresses.

Any kind of help is highly appreciated

Thank you

Re: ADF dataflow data Preview Error

v-sathmakuri — Wed, 16 Apr 2025 04:31:57 GMT

Hi zenbabasha33 ,

Thank you for reaching out to Microsoft Fabric Community.

As this is microsoft fabrics forum, i would suggest raising a ticket is ADF forum https://techcommunity.microsoft.com/category/azuredatabases/discussions/azuredatafactory

If this post helps, then please consider Accepting as solution to help the other members find it more quickly, don't forget to give a "Kudos" – I’d truly appreciate it!

Thank you!!

topic ADF dataflow data Preview Error in Dataflow

ADF dataflow data Preview Error

Re: ADF dataflow data Preview Error