Windows
Compatible applications
Quick Facts
Basic information about this file format
Extension
.XER
File Type
Primavera P6 Proprietary Exchange Format
Category
Data
Best first step
Use compatible software
Quick Summary
A practical overview of the .xer file format
The XER file format is a proprietary file format used by Oracle Primavera P6, a high-performance project management software suite. It is primarily used for exporting and importing project data, including schedules, resource assignments, cost information, and work breakdown structures (WBS). Unlike…
File extension
.XER
File type
Primavera P6 Proprietary Exchange Format
Category
Data
Recommended action
Open with a trusted compatible app
How to open a .xer file
Start with a trusted app that supports this format
- Check the file extension carefully and confirm that the file name really ends with .xer.
- Use software that supports this file type. If one app does not work, try another compatible program for the same platform.
- Update the application if the file was created by a newer version of the software.
- Scan files from unknown sources before opening them, especially documents, archives, scripts, installers, and executable files.
What is a .xer file?
File extension details and usage information
The XER file format is a proprietary file format used by Oracle Primavera P6, a high-performance project management software suite. It is primarily used for exporting and importing project data, including schedules, resource assignments, cost information, and work breakdown structures (WBS). Unlike XML, which is also supported by Primavera, XER is a text-based format that uses tab-separated values to represent complex relational database structures in a flat file. This format is essential for project planners and schedulers who need to share project schedules between different Primavera databases or with contractors and stakeholders. Because it contains sensitive project logic and constraints, it is the industry standard in construction, engineering, and energy sectors for project controls. It allows for the transfer of entire project portfolios or individual projects while maintaining the integrity of the scheduling logic, such as critical path method (CPM) calculations and predecessor-successor relationships. It is often preferred over other formats because of its compact size and speed when handling very large, complex project schedules with thousands of activities.
Software Compatibility
Programs that may open or work with .xer files
macOS
Compatible applications
Linux
Compatible applications
Mobile
Mobile applications
Can .xer files be converted?
Options for saving or exporting this file to another format
In many cases, a .xer file can be converted by opening it in compatible software and using an option such as Save As, Export, or Convert. The available output formats depend on the file type and the application used.
- Use the original software that created the file when possible.
- Check whether the application supports exporting to common formats.
- Be careful with online converters when working with private, business, or sensitive files.
- If conversion fails, the file may be corrupted, incomplete, encrypted, or not actually a .xer file.
Why can't I open a .xer file?
Common reasons this file type may not open correctly
Wrong software
The file may require a specific program that supports the .xer format.
Incorrect extension
The file extension may have been renamed manually, even though the actual file format is different.
Corrupted file
The file may be incomplete, damaged during download, or transferred incorrectly.
Outdated app
Your software may need to be updated before it can open newer versions of this file format.
Frequently Asked Questions
Common questions about .xer files
To open a .xer file, use software that supports this file format.
- Oracle Primavera P6
- Microsoft Project (with plugins)
- XER File Viewer
- Emerald Associates Taimer
- ScheduleAnalyzer
Open the file in compatible software and look for options such as Save As, Export, or Convert. If no export option is available, the file may require a specialized converter or the original application that created it.
- Verify that the file extension is correct.
- Install or update compatible software.
- Try another application that supports this format.
- Check whether the file is corrupted, incomplete, or encrypted.
A file extension alone does not guarantee whether a file is safe or unsafe. Only open files from trusted sources, scan unknown files before opening them, and be especially careful with executable, script, archive, and document files.
File safety tips
Use caution with unknown files
Only open files from trusted sources. Before opening a .xer file, scan it with antivirus software, verify that the file extension is expected, and avoid running unknown executable, installer, macro-enabled document, or script files.