Microsoft on Tuesday plans to release a new version of a "critical" security patch for Windows to repair problems some people had with the first version of the fix.

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.

The MS06-015 patch, designed to plug a flaw in Windows Explorer, can cause myriad problems for users of HP printers, scanners and digital cameras or Nvidia drivers prior to version 61.94. People with Sunbelt Software's Kerio Personal Firewall also will notice that Windows no longer works as it should after applying the fix, Microsoft has said.