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Symptom

Opening any file selection dialog (to open, save, import, export any file) leads to a crash.

This affects all PTV Vision products operated on Windows 11.

Cause

The issue seems to be related to an active synchronization of the Desktop with a cloud service, especially OneDrive. 

Resolution

Update to:

  • PTV Visum 22.01-07, 21.01-15 (see Release Notes ID 23773)
  • PTV Vissim 22.00-05, 21.00-13

https://support.ptvgroup.com/en-us/knowledgebase/article/KA-04283

Workarounds

- Deactivate in the OneDrive settings "Manage folder backup" the backup of Desktop files: "Stop backup"

Alternatives:

- Deactivate OneDrive.

- Or set the Environment variable MIMALLOC_DISABLE_REDIRECT=1. Caution: This option affects the runtime of executing Visum Procedures.