Cannot connect via proxy server

I need to use a proxy server in order to access university resources from off-campus. (This is set up in Firefox using Tools > Options > Advanced > Network > Settings > Automatic proxy configuration URL.) I have been doing this for two and a half years with no problems, but all of a sudden it doesn't work anymore. I have made no recent changes to my computer (Windows XP laptop) or browser settings. I get a connection has timed out / the server is taking too long to respond error message whenever I try to access a website via the university proxy server. This is only an issue for websites that require the proxy, such as databases that the university library subscribed to. I can access all public websites as usual.
I have tried Internet Explorer and get the same problem. If I disable the proxy server then my connection does not time out, I just get redirected to the university's "you are off campus and need to enable a proxy server to connect to this resource" page. University technical support tells me there is nothing wrong with the proxy server and that I am set up properly to use it, and that as far as they can tell the issue is probably with my ISP.
I am pretty sure this is indeed as Verizon issue, as I took my computer to a coffee shop and was able to access university resources via the proxy server just fine using the free wireless. I also got out my old laptop, reformatted the hard drive, reinstalled the OS (Windows XP), and had the exact same problem trying to use the proxy server via my home Verizon connection.
Incidentally, I am also unable to log in to Second Life using my home Verizon connection. I get an error message saying the server isn't responding. Again, I had no trouble with this using the coffee shop wireless.
I have spent about three hours trying to get someone from Verizon to address this problem, but keep being told I need to talk to someone else. I have now described this problem to ten different Verizon employees but have yet to reach anyone who even seems to know what a proxy server is, much less anyone who can help with this problem. If anyone out there has any suggestions, I'd much appreciate it. I cannot do much work from my apartment if I cannot access university resources.

That Trace suggests there is a firewall at play somewhere blocking ICMP Echo. Since it's timing out past the modem I do have reason to believe that the modem may be up to something. Visit http://192.168.1.1/ and check the Firewall settings. If it's set to Low or High, disable it. If you are prompted for a User/Pass, try the following:
admin/password
admin/password1
admin/admin
admin/admin1
Your Verizon Username and Password
========
The first to bring me 1Gbps Fiber for $30/m wins!

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System Update -- Cannot connect to proxy server - SOLVED

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Message Edited by Tim_Lenovo on 01-29-2008 02:49 PM
Solved!
Go to Solution.

I have discovered one other potential cause of this behaviour.
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I have discovered one other potential cause of this behaviour.
If your computer is attached to a Domain, ensure you are connected to the Domain using a profile that has administrator rights when attempting these upgrades.
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Cannot connect to SGD server via proxy

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Report cannot connect to OID server

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I would like to upgrade my firefox but when I do it cannot find the proxy server

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at sun.reflect.GeneratedMethodAccessor461.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
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Logon balancing error:cannot connect to message server (rc=9)

Hi Gurus,
I have just installed SAP GUI 710 in my new system and copied the saplogon.ini file to the respective folder in the new system.
I am now able to see the servers in the logon pad but not able to login .
When i try clicking the logon i am getting the below error message "
"Logon balancing error:cannot connect to message server (rc=9)"
Then further expanding the message i am getting the below message
" Error: Server '?' unknown
Tue Mar 02 11:51:05 2010
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Component NI (Network Interface), Version 39 rc =-3 , Detail NiErrSet. "
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Check OSS Note : 882741
Summary
Symptom
Some users cannot longer connect SAP GUI to any SAP systems e.g. via SAP Logon, SAPShortcut etc. although they have not made any update to either SAP GUI or SAP system. The attempt to connect to the SAP system ends with error messages like this: "Logon balancing error: could not connect to message server (rc=9)", "service sapmsXXX unknown" or "service sapdp## unknown".
The detailed error information is as follows:
    Error: service 'sap...' unknown
    Component NI (network interface), ...
    rc = -3, module ninti.c, line 463
    Detail NiPGetServByName: service 'sap...' not found
    System Call getservbyname
Other terms
service sapmsXXX unknown,logon balancing,service sapdp## not found error,etc/services,drivers\etc\services,getservbyname, sapdpxx
MSN Messenger 7.5,Connection Troubleshooter
Reason and Prerequisites
The reason for this malfunction is, that the datatype of the registry value HKLM\System\CurrentControlSet\Services\TCPIP\Parameters\DatabasePath
was changed from REG_EXPAND_SZ to REG_SZ.
The following programs are currently known to cause this registry change:
Starting MSN Messenger 7.5 "Connection Troubleshooter" (Build 7.5.0299).
Installation of MSN Messenger 7.0 or MSN Messenger 7.5 with the option automatic scanning and configuration of ports.
This modification prevents the expansion of environment variables in the value of the parameter. Therefore,
      %SystemRoot%\system32\drivers\etc
is not translated to
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and the services database is not found by the API function getservbyname().
If you have checked the datatype of registry value DatabasePath and it is REG_EXPAND_SZ, apply SAP Note 52959 to check the appropriate settings in the services file.
Solution
Start the registry editor and rename the registry value HKLM\System\CurrentControlSet\Services\TCPIP\Parameters\DatabasePath
Create an Expandable-String Value (REG_EXPAND_SZ) with the same name and value.
If more PCs are affected, you can export the correct value to a .reg file and import the .reg to other PCs.
If you have the same problem although you have not installed Microsoft MSN Messenger 7.5, create a customer message, collect the following information and attach it to the message according to note 541726 or upload it to sapservX (see note 40024):
Scan your workstations for spyware and viruses with up-to-date virus definitions. If you already did that what was the result ?
What software has been installed recently ? (client software, Firewall)
Create a registry export of the following key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstallon the affected and the unaffected PC respectively and attach the two .reg files to the customer message.
Are the users on the affected workstations logged on with administrative credentials (local administrator ) ?
Create an MPS Report Networking and Setup Perf of an affected workstation so that we can check if they use an software in common.
You can download the Networking MPS Reporting Tool at:
http://download.microsoft.com/download/b/b/1/bb139fcb-4aac-4fe5-a579-30b0bd915706/MPSRPT_Network.exe
You can find a short description about the features of the tool at:
http://download.microsoft.com/download/b/b/1/bb139fcb-4aac-4fe5-a579-30b0bd915706/MPSRPT_Network_Readme.txt
The Setup Perf MPS Reporting Tool is located at:
http://download.microsoft.com/download/b/b/1/bb139fcb-4aac-4fe5-a579-30b0bd915706/MPSRPT_SETUPPerf.EXE
Run this report too on identically configured workstations, which are not affected.
If you have already changed back the DatabasePath parameter and if after a while the value was switched back to REG_SZ perform the following steps to help us to identify the reason for this problem:
Switch the datatype back to REG_EXPAND_SZ
Download Regmon from http://www.sysinternals.com on the affected machines
Enable auditing on the affected clients
Modify the settings of the eventlog so that no important entry is deleted!
Open Regedit and highlight HKLM\System\CCS\Services\TCPIP\Parameters
Right-click on "Parameters" and choos "Permissions" and click "Advanced".
Choose "Auditing" and "Add".
Add "Everyone" and select "this key only" under "Apply onto".
Check the boxes "Set Value" and "Delete" and click "OK".
Apply these settings
Start Regmon and apply the correct filter settings:
Press the "magnifying glass" button to stop the monitoring.
Press the rubber button to delete all logged entries.
Go to "Options Filter/Highlight".
Copy the following value to the include field: tcpip\parameters\databasepath and click "Apply".
Start Regmon by pressing the magnifying glass button
Verify that logging starts when you double-click the TCPIP Key in regedit!
If the datatype will be changed again, provide us the output of the monitoring tools.
Solution provided by Microsoft
This issue is said to be fixed as of build 7.5.0311 of MSN messenger.

Cannot connect via proxy server

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