Error Connecting to SharePoint List (500): Internal Server Error

[Anonymous]

With no changes made to the source SharePoint list my report refresh started failing this morning with the error below.   I've had this happen on a different list and never found a fix for it.


Error:
DataSource.Error: Web.Contents failed to get contents from 'https://sharepointed.sharepoint.com/sites/fun-stuff/_api/Web/Lists(guid'9ab1335c-b8fe-1b99-be01-77d5...' (500): Internal Server Error
Details:
DataSourceKind=SharePoint
DataSourcePath=https://sharepointed.sharepoint.com/sites/fun-stuff
Url=https://sharepointed.sharepoint.com/sites/fun-stuff/_api/Web/Lists(guid'9ab1335c-b8fe-1b99-be01-77d5...


Connection steps:
let
Source = SharePoint.Tables("https://sharepointed.sharepoint.com/sites/fun-stuff", [Implementation="2.0", ViewMode="All"]),
#"9ab1335c-b8fe-4b23-be01-88d5f2c3320c" = Source{[Id="9ab1335c-b8fe-1b99-be01-77d5f2c3329c"]}[Items]
in
#"9ab1335c-b8fe-1b99-be01-77d5f2c3329c"

[NunoMota]

I don't think the issue is only limited to the fact the list has gone over 5000 items. I have one Power BI report that collects data from 5 different SharePoint lists, all using v2 of the connector. Two of these lists have over 50,000 entries, with around 20 columns, most with data, so they are huge lists. Power BI has no problem retrieving data from these lists.

Yesterday, one of the other lists went over 5000 entries, and now Power BI is complaining... I checked everything, and all lists are being retrieved in an identical form: using the same v2 connector, no filters, nothing...

I literally have no idea what the problem is or how to fix it, but having two huge lists syncing without a problem tells me it is possible to get this to work!

[DaFloDo]

@NunoMota  did you check for aggregates on a column (count, sum, ....) in the SharePoint default view? this could be the reason for this error. If so, just remove the aggregate.

[NunoMota]

Good point @DaFloDo, I wasn't aware of that! I checked and there is none. I don't think I ever used that to be honest. But thank you for the suggestion.

Updating the query from:

= SharePoint.Tables("https://site", [Implementation="2.0", ViewMode="All"])

to:
= SharePoint.Tables("https://site", [ApiVersion = 15])

Seems to have worked though! However, the others with 50k+ items are not configured like this... Very strange!

[olsen9]

My issue was that someone put a count in the default view under totals.  PowerBi does not like this

[DaFloDo]

we had the same behavior on one of our lists, that had 20k items long time woking an suddenly did not work anymore.
We found, that there was an aggregation (count) set in the default view of the list. So even, if you use the "all" setting, which should ignore all view settings, the aggregation setting of the default view seems to result in an error.

So for us, removing the aggregation from the default view of the list, solved this issue.

[IBRAHIMNAJJAR]

Thank you, this was very helpful, it worked for me as well!

[LuizCarlosFJR]

This worked for me. Thank you so much!

[Ayush_tiwari08]

This Solution worked for me thank you so much Sir for your help here.

[Ola_G]

Hi, can you help me with this "removing the aggregation from the default view of the list" - how could I do it?

Thanks!

[DaFloDo]

hi @Ola_G,
in the SharePoint list, in the upper right of the list, select the default view and then click on edit current view.

if there is an aggregation for any of the columns, set it to "none". This was fixing the problem for us.

Don't forget to save these changes

[whatsbhy]

Thank you for this! It solved the problem for me!

[jgirao_fixeld]

Thanks. This was the solution that worked here too.

[Andy_Bates_97]

Saved me, thanks... I also seemed to have to remove the grouping from the list as well!  Thanks

[karolp]

Hi @Andy_Bates_97 

many thanks, it worked for me as well- it was enough to remove the grouping from the default view.

[danielrios96]

It works for me, after a few month with this issue!

Thanks!

[Ola_G]

Unfortunately didnt help 😞 but @DaFloDo thanks anyway!

[PhilD]

You're kidding!! Am I to understand the Power Bi literally just stops working when a SharePoint list crossed the view threshhold and there is no solultion?

[wodraeve]

I am experiencing the same issue. Did anybody ever find the solution? Thanks

[Anonymous · Accepted solution]

Nope, opened a ticket with Micorosft Premier support and they said it's a SharePoint issue.  SharePoint support said nothing can be done.  a lot of wasted time.
.
I thought the point of using the Power BI 2.0 connection to SharePoint was to leverage paging and avoid issues like this.

[V-lianl-msft]

Hi @Anonymous ,

If you have multiple queries and when refreshing, Power BI evaluate and refresh all queries at the same time.

This may be the cause of this error.

Please try turning off the parallel data loading in the options for data load.

That will then not load the data in parallel but rather one at a time.

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