troubleshooting Question

Missing LPT1 on Windows 7 Pro System(s)

Avatar of Potterjazz
PotterjazzFlag for United States of America asked on
Printers and ScannersWindows XPWindows Server 2003
25 Comments3 Solutions1381 ViewsLast Modified:
After installation of Windows 7 Pro on several upgraded computers in an office LAN environment with a shared dot matrix printer, the newly-upgraded computers are unable to print to the shared computer using a DOS program running in XP Mode that sends print data to the LPT1 printer port. In trying to diagnose this problem, I discovered that the LPT1 printer port is entirely missing from the upgraded computers with this problem. Another, non-upgraded computer with the same OS that *has* the LPT1 port is able to print to the shared printer directly from Windows 7 Pro. FYI (but this may not be relevant), in all these print situations, whether printing through XP Mode or from Windows 7 Pro itself, users are printing from a database accessed remotely via CATS Pajamas (a publishing database program) that has its own printer configuration that formats print files sent to the dot matrix printer and specifies LPT1 as part of the printer setup inside the database.

I am not sure how to install an LPT1 port to match the port found on the one computer in this office that can print to the dot matrix printer successfully through the remote database and without running the database access out of XP Mode. This would be ideal, since XP Mode uses system resources that slows other programs running simultaneously (of which there are several for all of these users).

All advice is welcome.
Norm DickinsonGuru

Our community of experts have been thoroughly vetted for their expertise and industry experience.

Join our community to see this answer!
Unlock 3 Answers and 25 Comments.
Start Free Trial
Learn from the best

Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.

Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 3 Answers and 25 Comments.
Try for 7 days

”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.

-Mike Kapnisakis, Warner Bros