: Specific Windows releases introduce system-level libraries (such as onnxruntime.dll ) that conflict directly with Lumion's built-in versions, causing an immediate crash during the initialization phase.
Go to your Lumion installation folder and find the or Redist folder. Locate VC_redist.x64.exe .
If you are using Lumion versions 10.0 to 10.3.2 and have recently updated Windows, this is likely the exact cause.
Return to the menu and select Manage settings .
To prevent the error from recurring, you must tell your security software to ignore the Lumion folders. If you are using Lumion versions 10
The error is rarely a sign of a broken project; it is almost always a pathway issue . By updating the plugin and ensuring the software has administrative rights, you can usually restore the link in minutes.
error can bring your workflow to a grinding halt. This common issue typically occurs because your security software has mistakenly flagged and quarantined critical Lumion
Temporarily disable AV → reinstall Lumion → add Lumion folder to AV exclusions.
The Windows Registry is pointing to an old, moved, or deleted Lumion installation path. The error is rarely a sign of a
Go to Windows (or Control Panel > Programs and Features). Uninstall the Lumion LiveSync plugin.
: Go to Windows Settings > System > Display > Graphics . Search for your application, click Options , select High Performance to force your dedicated NVIDIA or AMD card, and click Save . Prevention and Long-Term Maintenance Action Item Why It Matters Best Practice Manage Cloud Syncing Preventing files from being locked mid-operation.
Open , select "Allow an app or feature through Windows Defender Firewall," and ensure Lumion has both Private and Public access. 3. Repair or Reinstall the Lumion Installation
Scroll down to and click Add or remove exclusions . and click Save .
Go to C:\Program Files\Lumion [Version]\Various\Redist versions .
Resolving this error requires understanding its root causes and following structured troubleshooting steps to repair your core program files. Root Causes of the Error
Running an old version of the plugin that is incompatible with a newer version of your 3D modeling software or Lumion.
