Clicking Cancel on IP Address Tab Does Not Reset Changes (199527)


The information in this article applies to:

  • Microsoft Windows 98
  • Microsoft Windows 98 Second Edition
  • Microsoft Windows 95
This article was previously published under Q199527

SYMPTOMS

When you specify an invalid Internet Protocol (IP) address on the IP Address tab in the TCP/IP Properties dialog box, you receive the following error message:
The specified IP address is not valid. Please check that the value you typed is correct. If you believe the value is correct but you still receive this message, check with your network administrator.
If you click OK and then click Cancel, the invalid IP address may not be reset.

CAUSE

This problem can occur if you click Cancel on the IP Address tab and click OK in the Network dialog box.

RESOLUTION

To prevent this problem from occurring, use either of the following methods:
  • Specify a valid IP address on the IP Address tab.
  • Click Cancel instead of OK in the Network dialog box.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

MORE INFORMATION

The following table lists invalid IP addresses for a computer, where x.y.z is a range of numbers from 0 to 254.

Invalid IP addressValid (reserved) usage
127.0.0.1Loopback/LocalHost address
255.0.0.0Class A subnet mask
255.255.0.0Class B subnet mask
255.255.255.0Class C subnet mask
225.x.y.zClass D address (multicast only)
239.x.y.z
240.x.y.zClass E address (reserved)
254.x.y.z
255.255.255.255Broadcast address


If you use any of the addresses listed above as the IP address for a computer, no other computer can successfully communicate with it.
Modification Type:MinorLast Reviewed:12/16/2004
Keywords:kbenv kbnetwork kbprb KB199527
©2004 Microsoft Corporation. All rights reserved.