DataFormat.Error: We reached the end of the buffer.

[brianAtSapient]

I have a report that is set to refresh daily, where it adds 1MM+ rows of JSON data (about 85K rows of data after formatting to table) daily. When I set my date range in the body of my request to greater than two days and try to refresh on PowerBI Desktop, I get the following error message:

"DataFormat.Error: We reached the end of the buffer."

When I reduce the date range to two days or less (about 2.5MM rows in the JSON response/about 170K rows of tabular data), it runs fine, which tells me it's an issue with size. Does anybody know a solution to this or a workaround?

Thanks.

[V-pazhen-msft · Accepted solution]

@brianAtSapient 

1. Try reinstall desktop, which has worked for someone who had the same issue.

2. Try change max cache size in the option. It looks a memory issue.

Paul Zheng _ Community Support Team
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[Greg_Deckler]

@brianAtSapient - Are you using the 32-bit or 64-bit client? @ImkeF - Any additional ideas other than client version and reducint the amount of data/columns coming across?

[brianAtSapient]

I'm running 64-bit client and have recently updated my PowerBI desktop to July 2020.

[amitchandak]

@brianAtSapient ,Refer if these can help

https://community.powerbi.com/t5/Power-Query/We-reached-end-of-buffer-Error/m-p/989369

https://community.powerbi.com/t5/Desktop/Json-Document-Web-Contents-DataFormat-Error-We-reached-the-...