Microsoft update caused havoc with Windows 7 users.

A spokesperson said in an emailed statement that KB3097877 was re-released to "address the Outlook difficulties that some customers experienced."

"We recommend customers apply this update to help stay protected," the statement read.

Apparently a number of users wrote to complain that Outlook crashed after the update was applied. Others said they experienced black screens and other errors.

The patch, also known as MS15-115, is a critical update affecting all versions of Windows. The patch fixes a series of flaws that could allow an attacker to remotely execute code on an affected machine by exploiting how the operating system handles and displays fonts.

Microsoft did not disclose what the issue was or why the faulty patch was released.

Source: SDNet