Recent updates to Microsoft Windows may give you grief … if they haven’t already.
Microsoft issued an official security bulletin recently that indicates users who have problems after installing one of a series of updates starting Aug. 2 should uninstall that update. Further, the company has removed links to the affected files so users who don’t have these updates loaded to their systems automatically will be protected from the threat.
According to a PC World report , the issues concern the following updates released this month:
System crashes, fonts that don’t render properly, and security flaws are all problems that could arise with the troubled updates if installed. In its security bulletin, the company explains :
“The most severe of these vulnerabilities could allow elevation of privilege if an attacker logs on to the system and runs a specially crafted application. An attacker must have valid login credentials and be able to log on locally to exploit these vulnerabilities.”
A list of the Windows operating systems that could be affected include:
- Windows Server 2003
- Windows Vista
- Windows Server 2008
- Windows 7
- Windows Server 2008
- Windown 8, Windows 8.1
- Windows Server 2012 and Windows Server 2012
- Windows RT and Windows RT 8.1
Microsoft has provided a mitigation plan  for removal of the updates causing users to have so many problems. Here are the steps for removing the updates from affected systems:
- Restart your computer in Safe Mode.
- Delete the fntcache.dat file. To do this, type the following command at command prompt, and then press Enter:del %windir%system32fntcache.dat.
- After you delete fntcache.dat, restart the computer. The computer should now start successfully.
- Click Start, click Run, type regedit in the Open box, and then click OK.
- Locate and then click the following subkey in the registry: HKEY_LOCAL_MACHINESoftwareMicrosoftWindows NTCurrentVersionFonts.
- Right-click the Fonts registry subkey, and then click Export.
- Type a name for the exported reg file, and select a location to store the file. You will use this file later to restore the font registration that you will remove in the following steps.
- After you save the reg file, find any registry values under the Fonts registry subkey for which the data field meets the following criteria: (1) Contains a full file path (not just a file name), and (2) The full file path ends in an “.otf” extension. (This indicates an OpenType font file.)
- Delete the fntcache.dat file again. (It will have been re-created.) To do this, type the following command at command prompt, and then press Enter: del %windir%system32fntcache.dat
- 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, and KB2975331.
- Restart the computer.
- Find the reg file that you saved earlier, right-click the file, and then click Merge to restore the font registry values that you previously removed.
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