Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

Enhance your career with this limited time 50% discount on Fabric and Power BI exams. Ends August 31st. Request your voucher.

Reply
justinj
Microsoft Employee
Microsoft Employee

Pipeline to Kusto error

Trying to copy a set of csv files from Lakehouse to Kusto DB on Fabric and getting the following error,

 

Operation on target Kusto Data failed: Activity failed because an inner activity failed; Inner activity name: Kusto Load, Error: ErrorCode=KustoWriteFailed,'Type=Microsoft.DataTransfer.Common.Shared.HybridDeliveryException,Message=Write to Kusto failed with following error: 'Kusto Connection String Builder has some invalid or conflicting properties: Can't communicate with 'ingest-sd-asdsdsd.22.kusto.fabric.microsoft.com' as this hostname is currently not trusted;

 

Repro Steps:

1. Create Pipeline with a For Each Loop & Place Copy Activity within it.

2. Copy activity config --> Source (Lakehouse Files (csv with gz compression)) & Sink (KustoDB, table is not created yet)

1 ACCEPTED SOLUTION
GraceGu
Microsoft Employee
Microsoft Employee

Unfortunately,  connection to Fabric Kusto database(kusto.fabric.microsoft.com) fails. 

We are working on the fix,  and will share update. 

View solution in original post

3 REPLIES 3
GraceGu
Microsoft Employee
Microsoft Employee

Unfortunately,  connection to Fabric Kusto database(kusto.fabric.microsoft.com) fails. 

We are working on the fix,  and will share update. 

GraceGu
Microsoft Employee
Microsoft Employee

Update: fix is in rollout. Tentative ETA: MS internal on next Mon, public region by region starting from next Tue.

GraceGu
Microsoft Employee
Microsoft Employee

I can repro this error. Will open an internal bug to track. 

Helpful resources

Announcements
Fabric July 2025 Monthly Update Carousel

Fabric Monthly Update - July 2025

Check out the July 2025 Fabric update to learn about new features.

August 2025 community update carousel

Fabric Community Update - August 2025

Find out what's new and trending in the Fabric community.