RE: Proxy requires authentication

Hi Lee,

Thank you for posting in SBS newsgroup.

From your post, my understanding on this issue is: A computer is having a
problem where it is being asked to authenticate to the proxy server. If I
have misunderstood your concern, please feel free to let me know.

To narrow down the problem, would you please help me collect the following
information?

1. Compare the IE settings to make sure the problematic clients are the
same as the good ones. Find a good computer, start IE, click
Tools->Internet Options, click the Connections tab, click the LAN Settings
button, write down the settings on this page, click Advanced and then wring
down the settings. Compare the same settings on the problematic client and
then correct them. Does the issue disappear?
2. Have the other good clients installed ISA Firewall Client? If so, make
sure the problematic client also have Firewall Client installed. If the
problematic clients have ISA Firewall Client installed, uninstall it and
then reinstall the ISA Firewall Client.
3. Make sure the users logon the domain on the problematic client. This
issue can occur if the users do not log on the domain and they use the
computer local user accounts.

Also please double check network configuration on SBS and client computer:

On SBS server:

External NIC:
IP: assigned by your ISP or your hardware router
Gateway: your ISP or your Hardware router IP
DNS: SBS INTERNAL NIC IP as the only entry

Internal NIC:
IP: Fixed IP
Gateway: None
DNS: SBS INTERNAL NIC IP as the only entry

In the DNS console (dnsmgmt.msc), right click your ServerName and click
properties. In the Forwarders tab, your ISP DNS server IP should be
inputted there.

On workstation inside your SBS local subnet

IP: Assigned by DHCP on SBS
Gateway: SBS internal NIC IP
DNS: SBS INTERNAL NIC IP as the only entry

If the problem still persists, please perform a clean boot on problematic
client as following:

1. Click Start, click Run, and then in the Open box, type "MSCONFIG"
(without the quotation marks). Click OK.
2. In the System Configuration Utility (MSConfig) window, click to select
the Selective Startup button.
3. Click to clear the check mark from the "Load startup items" below
Selective Startup.
4. Click the Services tab, click to check the "Hide All Microsoft Services"
box, and remove all the check marks from the remained Non-Microsoft
Services. Please note that the Exchange services could be marked as
non-Microsoft. Please do not disable those services.
5. Click OK to close the MSConfig window. Click Yes when you are asked to
restart your computer in order to enable the changes.
6. After restarting, please check whether this issue will reoccur.

Please do not hesitate to let me know if you have any questions or concern.

I appreciate your time and look forward to hearing from you.

Best regards,

Crina Li (MSFT)

Microsoft CSS Online Newsgroup Support

Get Secure! - www.microsoft.com/security

=====================================================
This newsgroup only focuses on SBS technical issues. If you have issues
regarding other Microsoft products, you'd better post in the corresponding
newsgroups so that they can be resolved in an efficient and timely manner.
You can locate the newsgroup here:
http://www.microsoft.com/communities/newsgroups/en-us/default.aspx

When opening a new thread via the web interface, we recommend you check the
"Notify me of replies" box to receive e-mail notifications when there are
any updates in your thread. When responding to posts via your newsreader,
please "Reply to Group" so that others may learn and benefit from your
issue.

Microsoft engineers can only focus on one issue per thread. Although we
provide other information for your reference, we recommend you post
different incidents in different threads to keep the thread clean. In doing
so, it will ensure your issues are resolved in a timely manner.

For urgent issues, you may want to contact Microsoft CSS directly. Please
check http://support.microsoft.com for regional support phone numbers.

Any input or comments in this thread are highly appreciated.

=====================================================

This posting is provided "AS IS" with no warranties, and confers no rights.
--------------------
| Thread-Topic: Proxy requires authentication
| thread-index: AcaN9M+HqtqvCm9gQja5K5MegZZjww==
| X-WBNR-Posting-Host: 74.128.27.133
| From: =?Utf-8?B?TGVlIEpvaG5zb24=?= <LeeJohnson@xxxxxxxxxxxxxxxxxxxxxxxxx>
| Subject: Proxy requires authentication
| Date: Mon, 12 Jun 2006 00:50:02 -0700
| Lines: 13
| Message-ID: <AF5C07D3-D3FB-41CE-A2DE-39429FC611FA@xxxxxxxxxxxxx>
| MIME-Version: 1.0
| Content-Type: text/plain;
| charset="Utf-8"
| Content-Transfer-Encoding: 7bit
| X-Newsreader: Microsoft CDO for Windows 2000
| Content-Class: urn:content-classes:message
| Importance: normal
| Priority: normal
| X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.1830
| Newsgroups: microsoft.public.windows.server.sbs
| Path: TK2MSFTNGXA01.phx.gbl
| Xref: TK2MSFTNGXA01.phx.gbl microsoft.public.windows.server.sbs:274483
| NNTP-Posting-Host: TK2MSFTNGXA01.phx.gbl 10.40.2.250
| X-Tomcat-NG: microsoft.public.windows.server.sbs
|
| I have a client's PC that constantly pops up the following message. I
have
| read a few other threads in this group about this same problem but have
not
| been able to find a solution. The PC is a Windows XP SP2 connected to
SBS2K3
| with ISA2004. No other client on the network is experiencing this problem.
|
| Please enter password for HTTP proxy Your HTTP proxy requires
| authentication. Please enter the appropriate user name and password.
|
| Any help would be greatly apprectiated.
|
| Thanks,
|
| Lee Johnson
|

.