This hotfix rollup is available for the following operating systems:
- Windows 8.1
- Windows 8.1 RT
- Windows Server 2012 R2
Hotfix InformationA supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that this article describes. Apply it only to systems that are experiencing this specific problem.
To resolve this problem, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft website:Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
Prerequisites To apply this hotfix, you must have the .NET Framework 4.5.1 installed.
Restart requirementYou have to restart the computer after you apply this hotfix if any affected files are being used. We recommend that you exit all .NET Framework-based applications before you apply this hotfix.
Hotfix replacement informationThis hotfix package does not replace a previously released hotfix package.
Issue 1Assume that you have a Microsoft Windows Presentation Foundation (WPF) application, and that one or more of the following is true:
- Another process (such as a handwriting recognizer or an assistive tool) is using Microsoft Text Services Framework (TSF) to query the screen position of text in your application.
- Such a query arrives at a time when there is pending layout work in your application.
- The text that is queried is changed by executing the pending layout work.
This issue depends on the relative timing of your application and the TSF client process. Therefore, it seems to be an intermittent or random failure.
This update prevents the exception from occurring, but instead returns an error to the TSF query when this situation occurs.
Article ID: 2937674 - Last Review: 25 Apr 2014 - Revision: 1