If you are experiencing a specific variant of this error, are you using and did this happen after a Windows update ? Knowing these details can help identify if it's a known compatibility issue.
The process is similar but varies by software. Look for sections named "Quarantine," "Restore," or "History." Find the Lumion-related files and restore them. Once restored, you must add an . Refer to your antivirus's support documentation on how to exclude a folder from real-time scanning. Add your entire Lumion installation folder (e.g., C:\Program Files\Lumion X.X ) and the folder where your project files are saved to the exclusion list.
Follow these troubleshooting steps in order to resolve the issue and restore your LiveSync functionality. 1. Perform a Clean Reinstallation of Lumion LiveSync
Most commonly, it's part of a three-stage error cascade: If you are experiencing a specific variant of
You can usually fix this issue without a full uninstallation by following these steps:
Installing Lumion is usually a straightforward process, but like any heavy 3D rendering software, it can sometimes encounter issues. One frustrating error message that users—particularly those on older versions or after Windows updates—might encounter is:
Move these files temporarily to your Desktop (cutting them from the original folder). Look for sections named "Quarantine," "Restore," or "History
If the first solution didn't work, or you’re using a Lumion version beyond 10.3.2, your antivirus is the likely culprit. You need to check your antivirus’s quarantine log and restore any Lumion-related files.
: Sometimes, the software might be installed in a location that is not correctly referenced by the system or Lumion itself, leading to missing channels.
If you are using Lumion 10, a known issue exists where Windows 10 (May 2020 Update) conflicts with Lumion's onnxruntime.dll file 1.2.5. Lumion. Add your entire Lumion installation folder (e
| Cause Category | Detailed Explanation | Typical Scenarios | | :--- | :--- | :--- | | | Your antivirus software or Windows Defender may falsely identify certain Lumion files (particularly .dll files) as threats and quarantine them. When Lumion tries to access these quarantined files at startup, it fails, triggering the error. | After a fresh installation, an antivirus update, or when you first launch a newly installed Lumion version. This is a frequent cause, as reported by users on platforms like the Lumion Community Q&A. | | OS Update Conflicts (Especially Lumion 10) | A known conflict exists specifically between Lumion versions 10.0 to 10.3.2 and the Windows 10 May 2020 Update (v2004). This update included Microsoft's own version of the Onnxruntime library, which conflicts with the version bundled with Lumion, preventing them from loading together. | You've recently updated Windows to version v2004 or newer, and you are using a Lumion version from the 10.x series. | | Corrupted or Missing System Files | Core system components required for many applications, like the Microsoft Visual C++ Redistributable packages, can become corrupted or outdated. This can occur due to incomplete installations, updates from other software, or system errors. | After installing or updating other software, or after an unexpected system shutdown or crash. | | Hardware & Graphics Conflicts | If your system has both an integrated (e.g., Intel HD Graphics) and a dedicated (e.g., NVIDIA or AMD) graphics card, Lumion might default to the slower integrated one. This can cause various errors, including file-loading issues. Outdated graphics drivers are another major contributor. | On laptops or desktops with dual graphics cards. The error can manifest randomly or after a driver update. | | Incorrect File Placement | In some cases, especially with the Onnxruntime.dll conflict, the required file might exist but is in the wrong directory. Lumion looks for it in a specific location, and if it's not there, it cannot load the associated routine. | This is a specific fix for Lumion 10.x versions, but file path issues can, in principle, occur in other versions as well. |
Are you using any or strict firewall software on this machine? Share public link
: Running Lumion or its installer without administrator rights can prevent it from accessing or writing necessary "channel" configuration data. Step-by-Step Troubleshooting Guide
Ensure there are no lines blocking act-3d.com or lumion.com .
Add a folder exclusion for the entire directory: C:\Program Files\Lumion [Your Version] .
