October 13, 2009 / 8:03 PM / in 8 years

Microsoft releases biggest patch on record

2 Min Read

<p>Steven Sinofsky Microsoft senior vice president for the Windows and Windows Live Engineering Group discusses the features of Microsofts's new operating system Windows 7 at the 2008 Microsoft Professional Developers Conference in Los Angeles in this October 28, 2008 file photo.Fred Prouser</p>

SEATTLE (Reuters) - Microsoft Corp issued its biggest software patch on record on Tuesday to fix a range of security issues in its programs, including the yet to be released Windows 7 operating system.

In a monthly update sent to users of its software, Microsoft released 13 security bulletins, or patches, to address 34 vulnerabilities it identified across its Windows, Internet Explorer, Silverlight, Office and other products.

It said six of the patches were high priority and should be deployed immediately. The patches -- which update software to write over glitches -- are designed to protect users from hackers or malicious software downloaded from the Internet.

Several of the patches affect Windows 7, the software maker's new operating system, which will be officially unveiled next week, but has been widely used in test versions.

Such an early sign of security issues on Windows 7 is potentially worrisome for Microsoft, which is hoping its new operating system will erase bad feelings among many customers who bought the predecessor, Vista.

A Microsoft spokesperson could not immediately say whether the company had identified further security problems with Windows 7. The company generally does not disclose such problems until it has patches available.

The vulnerabilities in Windows 7, including the risk of having a PC taken over by a hacker, were serious flaws, but to be expected, according to Dave Marcus, senior researcher at software security firm McAfee Inc.

"As long as human beings are writing code there are always going to be vulnerabilities," he said.

Tuesday's update included the largest number of patches to be issued on a single day by Microsoft.

Corporate users will need to test the patches before they deploy them to make sure they do not cause machines to crash because of compatibility issues with existing software.

Reporting by Bill Rigby and Jim Finkle; editing by Carol Bishopric and Andre Grenon

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