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How to Open and Review an XER File Without Primavera P6

· 2 min read
Kazinex Team
Kazinex Team
Project controls for construction

You've been sent a .xer file — a subcontractor's programme, a claim submission, a baseline for review — and you don't have a Primavera P6 license on this machine. What are your options?

What a .xer file actually is​

XER is Primavera P6's plain-text export format: a tab-delimited dump of projects, WBS, activities, relationships, calendars, and resources. Because it's text, lots of tools can read it — the question is how much of the schedule's meaning they preserve (calendars and float are where cheap viewers usually get it wrong).

Option 1: Ask for a PDF or Excel export​

Fine for a glance, useless for review. You can't trace logic, check float, or verify the critical path in a flattened export. If your job is to approve or contest the schedule, you need the network, not a picture of it.

Option 2: Import it into your own P6​

The traditional answer — if you have a license, matching versions, and you're comfortable importing an external contractor's data (with its calendars and global data) into your environment. Many planners keep a scratch database precisely for this. It works, but it's slow, and it's exactly the kind of cross-contamination risk many organizations' P6 admins prohibit.

Option 3: Review it in the browser — without uploading it​

A browser-based analyzer parses the XER locally on your machine. The Kazinex XER Quality Checker is free and requires no login: drop the file, and it parses the full network client-side — the schedule never leaves your computer — then scores it against the DCMA 14-point assessment, flags missing logic, negative float, hard constraints, high-duration activities and more, with an exportable Excel report.

That inversion matters for review workflows: you get a defensible, standards-based read on a contractor's programme before deciding whether it deserves a deeper look in P6 — with no import, no license seat, and no data leaving your laptop.

For ongoing work — editing schedules, comparing baselines, running earned-value and float-path analysis — that's what the full Kazinex Planner is for. But for the "someone emailed me an XER and I need an opinion today" problem, the free checker is the fastest route.

Related reading: The DCMA 14-point schedule check, explained.