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This error appears multiple times in HostServer Logs: "Failed to resolve user 'i:0i.t|00000003-0000-0ff1-ce00-000000000000|app@sharepoint' on SharePoint site"

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Issue

When viewing your HostServer logs the following error may appear many times when accessing your Sharepoint site:

"Failed to resolve user 'i:0i.t|00000003-0000-0ff1-ce00-000000000000|app@sharepoint' on SharePoint site”.

Symptoms

If you're seeing this error, it will appear many times in your HostServer Logs when accessing/using SharePoint.

Troubleshooting Steps

To resolve this error, make the following changes to the "...Host Server\Bin\K2HostServer.exe.config" file by performing the following steps:

Part 1
Make sure this is between the <configSections> and </configSections> tags:

<section name="sourcecode.sharepoint.groupProvider" type="SourceCode.Security.Providers.SharePoint.GroupProviderConfigurationExclusionSection, SourceCode.Security.Providers.SharePoint, Version=4.0.0.0, Culture=neutral" />


Part 2
Add the user ( i:0i.t|00000003-0000-0ff1-ce00-000000000000|app@sharepoint ) to be excluded in the tags below(bob is an example):

<sourcecode.sharepoint.groupProvider>

<exclusions>

<add name="i:0i.t|00000003-0000-0ff1-ce00-000000000000|app@sharepoint" />

</exclusions>

</sourcecode.sharepoint.groupProvider>