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Matthew_Martell's avatar
Matthew_Martell
Icon for Advocate II rankAdvocate II
1 month ago
Solved

Session diagnostics error

Hi Since the June 2026 version of power BI, if I enable 'Start Diagnostics' in the Tools menu of Power Query (for Query Editor only), I get an error when I refresh the data preview: Container e...
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  • v-abhinavmu's avatar
    v-abhinavmu
    1 month ago

    Hi Matthew_Martell​,
    Thanks for confirming that the issue also occurs in the August 2026 release.

    Microsoft’s documentation explains that Start Diagnostics records evaluations triggered during actions such as Refresh Preview, while Diagnose Step performs a separate evaluation for the selected step. 

    Since the "0x80131623" error persists when using Start Diagnostics -> Refresh Preview, I recommend reaching out to Microsoft Support for further investigation. You can provide them with the affected Power BI Desktop versions, the error code, and the observations already confirmed in this thread.

    You can submit a support request from Power BI Desktop -> Help -> Support -> Submit a ticket, or use the Microsoft Learn link below:
    Create a Fabric and Power BI Support Ticket - Power BI | Microsoft Learn

    For more details, please refer to the below Official Microsoft Documentation:
    Query diagnostics - Power Query | Microsoft Learn
    Record Query Diagnostics in Power BI - Power Query | Microsoft Learn

    I hope this helps. Please feel free to reach out if you have any further questions.
    Thank you.

v-abhinavmu's avatar
v-abhinavmu
Icon for Community Support rankCommunity Support
1 month ago

Hi Matthew_Martell​,
Thanks for reaching out to the Microsoft Fabric Community forum.

Query Diagnostics is designed to help understand what Power Query is doing during authoring and refresh time. When you start diagnostics, Power Query traces evaluations caused by actions such as refreshing the data preview.

For Query Editor scenarios, you can use Enable in Query Editor under the Diagnostics settings in Power BI Desktop. This allows Query Diagnostics to be used when previewing and authoring without requiring Power BI Desktop to run as administrator.

If you use Start Diagnostics, make sure to select Stop Diagnostics after reproducing the behavior. This allows Power Query to collect and parse the recorded traces.

For more details, please refer to the below Official Microsoft Documentation:
Query diagnostics - Power Query | Microsoft Learn

I hope this helps. Please feel free to reach out if you have any further questions.
Thank you.