Issue:
Numerous XP errors after SP1 has been applied

Cause:
SP1 and related patches

Solution:
Slow Problems after installing XP SP1 (Re: MS Q331519)
Creating Network Connection problem after XP SP1 (Re: MS Q329441)
"File or Network Path No Longer Exists" or "No Network Provider Accepted the Given Network Path" Errors after installing XP SP1 (Re: MS Q329170)
Connect using a dial-up modem or VPN option in the New Connection Wizard is unavailable (grayed out)
Slower Problems after installing XP SP1 (Re: MS Q331519)

After you install Windows XP SP1 with the SMB signing, you may see a variety of errors relating to Windows XP SP1 client computers. These errors may include, but are not limited to the following errors:

• When you open Microsoft Office files, they are opened as read-only (you have to click Save As to save a file).
• You cannot copy files.
• The file or the network path no longer exists.
• Network paths are not accepted by any network provider.
• The following event ID messages are logged after you apply Group Policy objects (GPOs)

Refer to MS Q331519 for more info.

Creating Network Connection problem after installing XP SP1 (Re: MS Q329441)

Symptom: After installed SP1 for Windows XP, you may experience some difficulties:

1. You cannot create a VPN or Dial-Up. These items on the "Network Connection" page of the New Connection Wizard are grayed out.
2. When trying to start the Remote Access Connection Manager service, you receive "Error 5: Access is denied" or Event ID: 7023 in Event Viewer.
3. The Network Connections folder is empty.
4. ICS and ICF services do not start because of a dependency failure.

Resolution: to resolve this problem, try to reinstall SP1 first. If you cannot reinstall SP1 or it does not work, start Registry Editor, and then edit  registry based on MS Q329441.

"File or Network Path No Longer Exists" or "No Network Provider Accepted the Given Network Path" Errors after installing XP SP1 (Re: MS Q329170)

1. File or network path no longer exists or
2. No network provider accepted the given network path. These error messages are a network-related Server Message Block (SMB) packet issue that may occur if SMB signing is enabled on the source W2K computer.

Resolution: you need to download the fixing from MS. Please refer to MS Q329170 .

Connect using a dial-up modem or VPN option in the New Connection Wizard is unavailable
(grayed out)

Symtoms:

1. After installed SP1 for XP and then use the System Restore feature to restore Windows to a state before the installation of the service pack.
2. After upgraded your computer to XP Pro from Win98, ME and XP Home. You may experience the following symptoms:

• The Connect using a dial-up modem or VPN option in the New Connection Wizard is unavailable (gray out).
• The Network Connections folder is empty.
• ICS and ICF services do not start because of a dependency failure.
• In the Event Viewer, you may get Event ID: 7023, Event ID: 20035 or error 5 with Access is denied, Remote Access Connection Manager failed to start because it could not create buffers or Could not start the Remote Access Connection Manager service on Local Computer.

Resolution:

1. To resolve this problem, reinstall SP1 for Windows XP.
2. Delete the NextID value HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\NextID, and then restart the computer. 3) Delete the Telephony key HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Telephony.

Note: refer to MS Q320558, Q259886 and Q329441