msos2.hlp (Table of Contents; Topic list)
Important Notice
The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.
SYS1779
SYS1779
 
Explanation
 
The Presentation Manager detected an error while trying to write to this
device.
 
Action
 
Make sure the device is:
 
1. Installed and connected
2. Switched on
3. Not being used by another process
4. In the proper receive mode
 
Retry the command.