PRJ: Opening MPX File or Text Based File Requires an Extension (146624)


The information in this article applies to:

  • Microsoft Project 2000
  • Microsoft Project 98 for Windows
  • Microsoft Project for Windows 95 4.1
  • Microsoft Project for Windows 1.0
  • Microsoft Project for Windows 3.0
  • Microsoft Project for Windows 3.0a
  • Microsoft Project for Windows 4.0
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 TypeExtension
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.
Modification Type:MinorLast Reviewed:7/27/2006
Keywords:kbinfo kbinterop kbusage KB146624
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