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MSP Project won't open after baselining - Error: "We're sorry..."


Article ID: 144208


Updated On:


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A project won't open after baselining. It goes from writing to XML to not responding. Microsoft Project (MSP) eventually crashes with a "We're sorry. There seems to be a problem with this file" error. 


This can happen if the project being exported is too large for MSP to open. Adding a baseline doubles the size of the project, which is why this may be noticeable especially after baselining. 


Release : All Supported Releases



  1. Review MSP Integration performance best practices to see if there are any options that can be used to help reduce the size of the project (durations, # of tasks, assignments, baselines, etc)
  2. Additionally, as of the April 3, 2018 MSP Update, a configuration is available to help with this issue:
    • As this requires a registry setting change, it's recommended to take a backup of the registry prior to making the change
    • See the following Microsoft article for more details on this improvement and steps to update the registry: April 3, 2018, update for Project 2016 (KB4018320)
    • This change would need to be made on any workstation that would be opening the larger projects

Additional Information