CSOM: Microsoft.SharePoint.Client.ServerException: No User or App Context found

Question

Hi,

I've got the exception when using SharePoint Search API:

Microsoft.SharePoint.Client.ServerException: No User or App Context found

my code works fine on one SharePoint site, but on another it fails with above error.
My code is just a simple search query:

        KeywordQuery keywordQuery = new KeywordQuery(_context);
        keywordQuery.StartRow = startIndex;
        keywordQuery.QueryText = $"IsDocument:1";
        keywordQuery.RowLimit = _searchPagesChunkLimit;
        keywordQuery.RowsPerPage = _searchPagesChunkLimit;
        keywordQuery.TrimDuplicates = false;
        SearchExecutor searchExecutor = new SearchExecutor(_context);
        ClientResult<ResultTableCollection> results = searchExecutor.ExecuteQuery(keywordQuery);
        _context.ExecuteQuery();

Please help.
Thanks.

Answer 1

Hi @Konstantin Hvan ,

I'm glad to hear you solve the problem ,if you have any issue about SharePoint, you are welcome to raise a ticket in this forum.

By the way, since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others." and according to the scenario introduced here: Answering your own questions on Microsoft Q&A, I would make a brief summary of this thread:

[CSOM: Microsoft.SharePoint.Client.ServerException: No User or App Context found]

Issue Symptom:
I've got the exception when using SharePoint Search API:

Microsoft.SharePoint.Client.ServerException: No User or App Context found  

my code works fine on one SharePoint site, but on another it fails with above error.
My code is just a simple search query:

KeywordQuery keywordQuery = new KeywordQuery(_context);  
     keywordQuery.StartRow = startIndex;  
     keywordQuery.QueryText = $"IsDocument:1";  
     keywordQuery.RowLimit = _searchPagesChunkLimit;  
     keywordQuery.RowsPerPage = _searchPagesChunkLimit;  
     keywordQuery.TrimDuplicates = false;  
     SearchExecutor searchExecutor = new SearchExecutor(_context);  
     ClientResult<ResultTableCollection> results = searchExecutor.ExecuteQuery(keywordQuery);  
     _context.ExecuteQuery();  

Current status:

The application lacks rights, specifically it's Sites.ReadAll

You could click the "Accept Answer" button for this summary to close this thread, and this can make it easier for other community member's to see the useful information when reading this thread. Thanks for your understanding!

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Answer 2

Hi @Konstantin Hvan ,

This error means that the user or app context was not found ,please check if the query content exist with the site, and check if you are connected to your site correctly.

More information for reference:
https://learn.microsoft.com/en-us/sharepoint/dev/general-development/using-the-sharepoint-search-query-apis#query-using-the-net-client-object-model
https://learn.microsoft.com/en-us/sharepoint/dev/general-development/sharepoint-search-rest-api-overview

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Answer 3

Well, we've found out what was the problem - it's a lack of rights for the application, specifically it's
Sites.ReadAll
I wish the error message would be more informative.