http://support.microsoft.com/kb/2975331


Known issues with this update

• Known issue 1
  Microsoft is investigating behavior where fonts do not render correctly after any of the following updates are installed:
  2982791 MS14-045: Description of the security update for kernel-mode drivers: August 12, 2014 
  2970228 Update to support the new currency symbol for the Russian ruble in Windows
  2975719 August 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 
  2975331 August 2014 update rollup for Windows RT, Windows 8, and Windows Server 2012
  Status
  Microsoft has removed the download links to these updates while these issues are being investigated. 
  
  Mitigations
  Open the Programs and Features item in Control Panel, and then click View installed updates. Find and then uninstall any of the following update that are currently installed:
  • KB2982791
  • KB2970228
  • KB2975719
  • KB2975331
• Known issue 2
  Microsoft is investigating behavior where systems may crash with a 0x50 Stop error message (bugcheck) after any of the following updates are installed:
  2982791 MS14-045: Description of the security update for kernel-mode drivers: August 12, 2014 
  2970228 Update to support the new currency symbol for the Russian ruble in Windows
  2975719 August 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 
  2975331 August 2014 update rollup for Windows RT, Windows 8, and Windows Server 2012
  This condition may be persistent and prevent the system from starting correctly.
  
  Status
  Microsoft has removed the download links to these updates while these issues are being investigated. 
  
  Mitigations
  For more information about how to resolve this, click the following article number to view the article in the Microsoft Knowledge Base. See the section heading "Known issue 3": 
  2982791 MS14-045: Description of the security update for kernel-mode drivers: August 12, 2014