External USR Modem 5686E. Win XP Pro. Dialup to ISP. Worked fine on selfbuilt machine for 10 months. Then hard drive failed, so had to replace with new HD, install fresh XP Pro, restore apps and docs etc from backup. All is well, except:
When try to dial to Worldnet, get Opening Port ... Error Code 633. Modem already in use or not configured properly.... It does not even try to dial. However, if I use Hyperterminal, it will dial out successfully to a phone line. Also, if I do the XP diagnostic on the modem, it answers.
Modem is on COM 1. Checked cables and DIP switches on modem. Checked all of the dialup settings. Uninstalled modem. Uninstalled USR software. Reinstalled same. Got latest driver from USR and installed. Flashed modem with latest V92 whatever. Used J16 Power tools to remove any apparent remnants from any app that might conflict (as far as could tell).
Tried msconfig, as suggested by MS help, for startup with nothing running except minimal Windows processes. Looked for any conflicting apps. Removed XP's FAX capability. Checked MS KB, such as 324760. No Palm Pilot ever around. Typical solutions involve pre XP situations.
Still Error 633. Any suggestions would be most appreciated.