Microsoft KB Archive/132413

= PC Ext: Err Msg: Error Code=1005, Device Error=000c =

Article ID: 132413

Article Last Modified on 10/30/2006

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APPLIES TO


 * Microsoft Mail for PC Networks 3.2

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This article was previously published under Q132413



SYMPTOMS
External may report the following error in the SESSION.LOG when you try to send a mail message to a local area network (LAN) connected postoffice:

A critical error has occurred

Error Code=1005, Device Error=000c



CAUSE
This error is not an External related error. The External program is returning an error generated by Interrupt 24h in MS-DOS (Critical-Error Handler). This could have originated from MS-DOS or from the network shell, if a network drive is involved.

In most cases where External gives an error code of this nature, it indicates a problem accessing a network drive.



RESOLUTION
The Error Code= value consists of four digits. The last two digits are the most useful for identifying a problem affecting the External program. The hex values of 00 through 1A correspond with drives A through Z (00=A, 01=B, ..., 05=F, ..., 0C=M, ..., 1A=Z).

The Device Error= value is passed from the contents of the DI register, and only the lower byte of the DI register is valid. If the Device Error= value is not in the following table, it may be an invalid register entry that is getting corrupt in the process of generating the error. Error Code     Meaning --- 00h            Write-protected disk 01h            Unknown unit 02h            Drive not ready 03h            Invalid command 04h            Data error (CRC) 05h            Bad request structure length 06h            Seek error 07h            Non-DOS disk 08h            Sector not found 09h            Printer out of paper 0ah            Write fault 0bh            Read fault 0ch            General failure 0fh            Invalid disk change (DOS 3 & later) The three most common Device Error= values returned in External are as follows:

Device Error=000c (General failure)

Device Error=0002 (Drive not ready)

Device Error=000A (Write fault)

In this case, Error Code= 1005, Device Error=000C would translate to a general failure reading drive F:.

Additional query words: 3.20 3.20a

Keywords: KB132413

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