On Tuesday Microsoft plans to fix a problem with a "critical" security patch for Windows, in order to address problems some people had with the first version of the patch.

The updated patch will be made available on Microsoft's online updating service, Microsoft Update, and pushed out to users via the Automatic Updates feature in Windows, a Microsoft spokesman said in an e-mailed statement on Friday.

Microsoft will push out the fix only to people who have already applied the update and are experiencing problems related to Hewlett-Packard Share-to-Web software or older Nvidia graphics drivers, the spokesman said. "Customers who have already applied the MS06-015 update and are not experiencing the problem need take no action," he said.