The trouble appears to occur only when default permission settings on a Windows directory have been changed, according to Microsoft. The software maker has received "limited reports" of problems from customers but is still investigating the issue, a representative said.
Even if users experience PC trouble after installing the patch, they will still be protected against any attack exploiting the Windows flaw, a Microsoft representative said. The patch was delivered with Microsoft security bulletin MS05-051.
Microsoft says that to overcome these problems, users should restore the default permissions for the Windows folder and the COM+ catalog. The company has produced a guide to help users do just that.