A common cause of Revit crashing during startup (without triggering an Autodesk Crash Error Report), is corrupted Revit plugin session data.
If you're experiencing Revit Crashing on startup and have also been using custom Revit plugins, please try the following;
Using Windows File Explorer, navigate to the below directory;
Within this directory you'll find folders named by the version of Revit installed, such as 2019, 2020 and 2021. Simply rename these folders to;
Restart Revit to check that it's now loading correctly.
Now, if Revit loads, that means you've got a corrupt plugin session on your hands and you may need to re-install that plugin. It may also be worth reaching out to that plug-in developer to let them know of this issue.
If you've previously installed multiple plugins, you can reload them one-by-one by copy-pasting them from the - old_20xx - folders that you created, into the new ones that Revit will generate on startup. Eventually you will find the one that is causing the crashes and can troubleshoot further.
- Sometimes, it's an old version which you simply need to update.
- Sometimes, it needs to be sent to the developer.
Feel free to reach out to the A2K Technologies support team by logging a support ticket too if coincidentally you're working with an Autodesk Plug-in that is crashing out your Revit, and we'll further investigate the issue.
Additional Troubleshooting Steps:
- Should you find that it's not a plugin causing the crashes, Autodesk has listed further steps that can be attempted: Crash on startup or when opening files in Revit | Revit Products | Autodesk Knowledge Network