SharePoint 2010: Event 7043 "Load control template file /_controltemplates/TaxonomyPicker.ascx failed"

Error Description

You install Microsoft SharePoint 2010 RTM on Windows 2008 R2, you receive the following error message multiple times in the application event log:

Event Type: Error

Event Source: SharePoint Foundation

Event Category: None

Event ID: 7043

Computer: SERVERNAME

Description: Load control template file /_controltemplates/TaxonomyPicker.ascx failed: Could not load type 'Microsoft.SharePoint.Portal.WebControls.TaxonomyPicker' from assembly 'Microsoft.SharePoint.Portal, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c'.

Error Cause

The ULS log is created in a code path where all control templates are loaded into the web application. This is a one-time process which happens just before showing any UI to the user after an IISReset.The source of the problem looks like a stale control template in the control templates folder while the control itself has been removed from the code base.

Fix

This is not causing any issues except for a wrong ULS log message a single time in a web application process life time, the exception is caught and that template file is skipped. This message should be treated as log noise and can be ignored.

1. Navigate to /14/TEMPLATE/ControlTemplates/TaxonomyPicker.ascx user control

2. Open the user control in a text editor and locate the first line

3. Find the character string , and replace with a comma ‘,’ (without quotes).

4. Save the user control

Reference