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

The Power BI Data Visualization World Championships is back! Get ahead of the game and start preparing now! Learn more

Reply
Anonymous
Not applicable

Power Query, Combine Files, Unexpected Error, Mashup Text

Hello Community, 

I have been using a transformation sequence to combine a number of .cvs file, everything had been working well. About two weeks ago I got an 'Unxpected Error' and a Mashup Text prompt when making slight adjustment to the query. I tried to go back to my previous query editor code but am still getting the same error. 

 

Any thoughts on this are much appreciated!!

 

wayers_1-1646585620753.png

 

 

4 REPLIES 4
Anonymous
Not applicable

Hi @Anonymous ,

 

I found a similar submitted issue which is about Unable to create a dataflow connected to OracleInternal ICM ID: 292582724

Please be patient to wait for fixing. If there is any news, I will update it here.


Best Regards,
Eyelyn Qin

crystalLearn
Regular Visitor

Today I have the same issue, last week was everything ok with the same setting...

@Anonymous do you still have the same problem? would be interesting to know how did you solve it.

@evelyn91011 

your proposed step 1: since I'm trying to connect several files to a dataflow, so it is directly in the PowerBI WorkingSpace, so assume not  relevant to my case.

your proposed step 2: how to check ?

your proposed step 3: it has been working, so assume not  relevant to my case.

Anonymous
Not applicable

I still have no resolution to this issue. This is a Dataflow issue in our workspace. All queries we have that use the 'combine files' have the issue.

Again any help is appreciated!

Anonymous
Not applicable

Hi @Anonymous ,

 

1.make sure your PBI is the latest version.

2.Please go to Power Query Editor to see if there are any errors in the underlying M code.

3.Go to the Data source settings, clear the permissions and re-connect

 

Similar thread:

https://community.powerbi.com/t5/Service/we-encountered-an-unexpected-Error-when-opening-a-dataflow/m-p/1940367

 

Best Regards,
Eyelyn Qin
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Helpful resources

Announcements
Power BI DataViz World Championships

Power BI Dataviz World Championships

The Power BI Data Visualization World Championships is back! Get ahead of the game and start preparing now!

December 2025 Power BI Update Carousel

Power BI Monthly Update - December 2025

Check out the December 2025 Power BI Holiday Recap!

FabCon Atlanta 2026 carousel

FabCon Atlanta 2026

Join us at FabCon Atlanta, March 16-20, for the ultimate Fabric, Power BI, AI and SQL community-led event. Save $200 with code FABCOMM.

Top Solution Authors