The following table provides a complete listing of DOS error numbers and their descriptions.

 Error
 Number Description
 ------ ------------------------------------------------
    1   Invalid function number
    2   File not found
    3   Path not found
    4   Too many open files (no handles left)
    5   Access denied
    6   Invalid handle
    7   Memory control blocks destroyed
    8   Insufficient memory
    9   Invalid memory block address
   10   Invalid environment
   11   Invalid format
   12   Invalid access code
   13   Invalid data
   14   Reserved
   15   Invalid drive was specified
   16   Attempt to remove the current directory
   17   Not same device
   18   No more files
   19   Attempt to write on write-protected diskette
   20   Unknown unit
   21   Drive not ready
   22   Unknown command
   23   Data error (CRC)
   24   Bad request structure length
   25   Seek error
   26   Unknown media type
   27   Sector not found
   28   Printer out of paper
   29   Write fault
   30   Read fault
   31   General failure
   32   Sharing violation
   33   Lock violation
   34   Invalid disk change
   35   FCB unavailable
   36   Sharing buffer overflow
  37-49 Reserved
   50   Network request not supported
   51   Remote computer not listening
   52   Duplicate name on network
   53   Network name not found
   54   Network busy
   55   Network device no longer exists
   56   Network BIOS command limit exceeded
   57   Network adapter hardware error
   58   Incorrect response from network
   59   Unexpected network error
   60   Incompatible remote adapter
   61   Print queue full
   62   Not enough space for print file
   63   Print file deleted (not enough space)
   64   Network name deleted
   65   Access denied
   66   Network device type incorrect
   67   Network name not found
   68   Network name limit exceeded
   69   Network BIOS session limit exceeded
   70   Temporarily paused
   71   Network request not accepted
   72   Print or disk redirection paused
  73-79 Reserved
   80   File already exists
   81   Reserved
   82   Cannot make directory entry
   83   Fail on INT 24H
   84   Too many redirections
   85   Duplicate redirection
   86   Invalid password
   87   Invalid parameter
   88   Network device fault