Sometimes, you may receive the message "AOL has detected a firewall (25-02-00-000)" while trying to sign on using the AOL® software. Listed below are the solutions to resolve the issue. After trying the first solution, check whether you can connect to the AOL® service. If you still receive the message, continue using the suggested solutions until the problem is fixed.
You may wish to print or save a copy of these instructions as this page may not remain visible as you go through the suggested steps.
Information you need
You will need to know the version of the Microsoft® Windows® operating system installed on your computer. You can find this information in the online help article How do I determine the version of Windows I have.
You will also need to know the version of AOL Connectivity Service (ACS) installed on your computer before attempting the solutions given below. If you are using AOL® 9.0 Optimized, AOL 9.0 Optimized SE/LE, or AOL Security Edition, follow the instructions given in the online help article How to determine which version of AOL Connectivity Service (ACS) I have.
Note: If you are using AOL 9.0 VR or higher, you have ACS 4 installed on your computer.
Solutions
Temporarily disable your firewall or configure McAfee
There may be a firewall or other security software on your computer that is preventing you from connecting to the AOL service. You can temporarily disable your firewall and check whether you are able to connect to the Internet. To learn how to disable the firewall, read our online help article Disable firewall or configure McAfee.
Disable SystemGuard using McAfee
SystemGuard may be blocking the AOL software from connecting to the AOL service. Disabling SystemGuard may help you resolve the issue. For instructions on how to disable SystemGuard, refer to the Disable SystemGuard section in the online help article SystemGuard in McAfee Internet Security Suite - Special edition from AOL.
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Delete all connection locations and redetect the modem
Deleting the sign on locations and connectivity files removes non-functional access phone numbers, wrong dialing options, and incorrect modem or broadband settings. The AOL software will automatically search and select the right connection device and guide you through selecting the right access phone numbers and dialing options. To know how to delete the connection locations and redetect the modem, read our help article Delete all connection locations and redetect the modem.
Uninstall and reinstall ACS
ACS is responsible for getting the AOL software connected to the AOL service. Uninstalling ACS will allow a fresh copy of the ACS files to be installed. To know how to uninstall and reinstall ACS, read our online help article Uninstall AOL Connectivity Service.
Contact your computer manufacturer
We have determined that the issue is not caused by the AOL software. We recommend that you contact your computer manufacturer, or if your computer is no longer under warranty, a local computer repair shop or technician, for further assistance. Let the computer manufacturer/technician know about the issue. There are many other programs that AOL uses in order to deliver content to your computer, and these programs should function efficiently. All software programs are highly dependent on the computer's operating system and other applications to work properly. It appears that one of the following programs/applications may be the cause of the issue.
- The computer operating system
- Several media players
- Many text editors and text viewers
- Microsoft Internet Explorer and other Web browsers
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