Problems Printing with Third-Party Device Drivers InstalledID: Q130588 
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You may experience either of the following symptoms:
In Device Manager, IRQ 7 may be listed as being used by an unknown device.Error writing to LPTx for Printer <xxxx>, there may be a problem with the Network or password is incorrect.
These problems can be caused by third-party device drivers being loaded in
the [386Enh] section of the System.ini file. The following device drivers
are known to prevent programs from printing:
   Cis1284.386 from Canon Multipass
   Lex01.386 from Lexmark
   Lexsw2.386 from Lexmark
   Mpass.386 from Canon Multipass
   Okiport.386 from Okidata laser printers
   Sumovmi.386 from Panasonic KXP-6100 laser printers
   Vcpd.386
   Vecpd.386 from Netscape Navigator
   Hpypeppy.386 from Hewlett Packard 
To resolve the problem, follow these steps:
system.ini
    - DEVICE=<path>\Cis1284.386
    - DEVICE=<path>\Lex01.386
    - DEVICE=<path>\Okiport.386
    - DEVICE=<path>\Sumovmi.386
    - DEVICE=<path>\Vcpd.386
    - DEVICE=<path>\Vecpd.386
   
   NOTE: To disable a line, place a semicolon (;) at the beginning
   of the line.
  
Note that Canon has released new drivers for the Canon Multipass 1000.
To obtain these drivers, contact Canon or visit the following Canon Web
site:
http://www.usa.canon.com
Additional query words: 98
Keywords          : kb3rdparty kberrmsg kbprint win95 windrvr win98 win98se 
Version           : WINDOWS:95
Platform          : WINDOWS 
Issue type        : kbprb 
Last Reviewed: July 16, 1999