---
title: "Floating License Error: Exiting due to Signal 37 Exit reason 5"
description: The error 'Exiting due to Signal 37 Exit reason 5' shows up in the Luxion Log for your Floating License
---

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# Floating License Error: Exiting due to Signal 37 Exit reason 5

## The error 'Exiting due to Signal 37 Exit reason 5' shows up in the Luxion Log for your Floating License

### Issue

For your floating license set up, if you look at your Luxion.log file by clicking the License Folder button within the Luxion License Server application and open the Luxion.log file you will see the entry below.![](https://support.keyshot.com/hubfs/Knowledge%20Base%20Import/s3_amazonaws_comcdn_freshdesk_comdatahelpdeskattachmentsproduction60025916639originalZCnXsMBOiASr69kLnJ08iJ7J1syYMgRATg.png)

### Environment Details

- KeyShot | KeyVR | KeyShotWeb | Network Rendering | KeyShot Viewer 
    - Any versions
- Floating License Setup with Luxion License Server

### Resolution

**Editing your computers Hosts file. Windows Computer**

1\. Go to **C:\\Windows\\System32\\drivers\\etc\\**.   
2\. Copy the **hosts** file to your desktop.   
3\. Open the **hosts** file in a text editor.   
4\. Go to the bottom of the hosts file and type in **127.0.0.1** hit the **Tab key** and enter your **MAC address**.   
5\. Save the **hosts** file and copy it back to the folder **C:\\Windows\\System32\\drivers\\etc**.   
6\. Open the Luxion License Server application and try to start your server.

**Macintosh**

1\. Open Terminal by doing **CMD + Spacebar** to open your *Search Bar*.   
2\. Type **HostName** in **Terminal**.   
3\. Copy your **HostName** down.   
4\. Type *open /etc* and hit Enter key.   
5\. Copy your **hosts** file to your desktop.   
6\. Open the **hosts** file with a text editor application (TextEdit, Text Wrangler, etc)   
7\. Go to bottom of **hosts** file and type in 127.0.0.1 hit *Tab button* and enter your **HostName** from step 2.   
8\. Save the **hosts** file and copy it back to the **/etc folder** and overwrite the original file.   
9\. Open Luxion License Server and try to start the service.

**\*Note:\*** This may affect Macintosh computers.

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