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Windows DUN/RAS Error Number 721
Windows Vista Solution List
- Make certain that all of your cables are secure and try powercycling your DSL modem. If the modem is able to Synchronize then try connecting again. If the modem does not Synchronize after about 1-2 minutes check all of your connections and filters. It would not be a bad idea to unplug them and replug them in, then powercycle your modem once this has been completed. If your modem will still not Synchronize, check with your ISP for reported outages.
- Delete and recreate the connection.
- Make certain your ISP is not experiencing an outage.
- Know a solution that is not listed? Please let us know about it by using the information located below.
Windows XP Solution List
- Make certain that all of your cables are secure and try powercycling your DSL modem. If the modem is able to Synchronize then try connecting again. If the modem does not Synchronize after about 1-2 minutes check all of your connections and filters. It would not be a bad idea to unplug them and replug them in, then powercycle your modem once this has been completed. If your modem will still not Synchronize, check with your ISP for reported outages.
- Delete and recreate the connection.
- Make certain your ISP is not experiencing an outage.
- Know a solution that is not listed? Please let us know about it by using the information located below.
Windows 2000 Solution List
- Make certain that all of your cables are secure and try powercycling your DSL modem. If the modem is able to Synchronize then try connecting again. If the modem does not Synchronize after about 1-2 minutes check all of your connections and filters. It would not be a bad idea to unplug them and replug them in, then powercycle your modem once this has been completed. If your modem will still not Synchronize, check with your ISP for reported outages.
- Delete and recreate the connection.
- Make certain your ISP is not experiencing an outage.
- Know a solution that is not listed? Please let us know about it by using the information located below.
Windows ME Solution List
- Make certain that all of your cables are secure and try powercycling your DSL modem. If the modem is able to Synchronize then try connecting again. If the modem does not Synchronize after about 1-2 minutes check all of your connections and filters. It would not be a bad idea to unplug them and replug them in, then powercycle your modem once this has been completed. If your modem will still not Synchronize, check with your ISP for reported outages.
- Delete and recreate the connection.
- Make certain your ISP is not experiencing an outage.
- Know a solution that is not listed? Please let us know about it by using the information located below.
Windows 98 Solution List
- Make certain that all of your cables are secure and try powercycling your DSL modem. If the modem is able to Synchronize then try connecting again. If the modem does not Synchronize after about 1-2 minutes check all of your connections and filters. It would not be a bad idea to unplug them and replug them in, then powercycle your modem once this has been completed. If your modem will still not Synchronize, check with your ISP for reported outages.
- Delete and recreate the connection.
- Make certain your ISP is not experiencing an outage.
- Know a solution that is not listed? Please let us know about it by using the information located below.
Windows 95 Solution List
- Make certain that all of your cables are secure and try powercycling your DSL modem. If the modem is able to Synchronize then try connecting again. If the modem does not Synchronize after about 1-2 minutes check all of your connections and filters. It would not be a bad idea to unplug them and replug them in, then powercycle your modem once this has been completed. If your modem will still not Synchronize, check with your ISP for reported outages.
- Delete and recreate the connection.
- Make certain your ISP is not experiencing an outage.
- Know a solution that is not listed? Please let us know about it by using the information located below.
Windows NT Solution List
- Make certain that all of your cables are secure and try powercycling your DSL modem. If the modem is able to Synchronize then try connecting again. If the modem does not Synchronize after about 1-2 minutes check all of your connections and filters. It would not be a bad idea to unplug them and replug them in, then powercycle your modem once this has been completed. If your modem will still not Synchronize, check with your ISP for reported outages.
- Delete and recreate the connection.
- Make certain your ISP is not experiencing an outage.
- Know a solution that is not listed? Please let us know about it by using the information located below.
Submit a Solution
Have a solution that is not listed here? Please let me know about it by e-mailing me at bliedel@modemhelp.net!
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