Knowledge Base

PRJ: Opening MPX File or Text Based File Requires an Extension

Article ID: 146624

Article Last Modified on 1/19/2007

Microsoft Project 2000 Standard Edition
Microsoft Project 98 Standard Edition
Microsoft Project 4.1 Standard Edition
Microsoft Project 1.0 Standard Edition
Microsoft Project 3.0 Standard Edition
Microsoft Project 3.0a
Microsoft Project 4.0 Standard Edition

This article was previously published under Q146624

SUMMARY

A project saved in a text based format such as .mpx, .txt, or .csv will not open correctly unless the file has the appropriate extension.

NOTE: This behavior is of particular importance when opening a text based file created with Microsoft Project for the Macintosh (which does not require extensions) in Microsoft Project for Windows.

MORE INFORMATION

Microsoft Project for Windows requires the correct file extension to open the following file formats:

File Type	Extension
MPX	.mpx
MPX 4.0	.mpx
MPX 3.0	.mpx
Text (TAB delimited)	.txt
CSV (Comma Separated Value)	.csv

NOTE: Other files formats such as .mpp .dbf, .wk* and .xls do not require the extension to open successfully.

Additional query words: prj2000 4.1

Keywords: kbinfo kbinterop kbusage KB146624