You are viewing an article about an obsolete product. Information on this page is provided as-is and not supported.

Unable to access any ports above COM9 in Windows NT with an application.



I'm writing my own application and I am not able to access any ports above COM9.


In Windows NT, the ports above COM9 must be addressed with the following naming convention: .COM#


For example, COM10 should be addressed as .COM10.  You may also address COM1-9 with the same naming convention.  Windows NT will recognize either name.
Last updated: Jan 11, 2024

Recently Viewed

No recently viewed articles

Did you find this article helpful?