# Library and 404 Issues

**URL:** <https://forum.signalrgb.com/t/library-and-404-issues/74>\
**Category:** Troubleshooting\
**Tags:** library, 404, troubleshooting\
**Created:** [January 18, 2023, 9:48pm UTC](https://forum.signalrgb.com/t/library-and-404-issues/74 "2023-01-18T21:48:19Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![FzR\_dontdie\_x](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.signalrgb.com/fzr_dontdie_x/32/7_2.png) [@FzR\_dontdie\_x](https://forum.signalrgb.com/u/FzR_dontdie_x)\
**Post date:** [January 18, 2023, 9:48pm UTC](https://forum.signalrgb.com/t/library-and-404-issues/74/1 "2023-01-18T21:48:19Z")

</div>

If SignalRGB is showing a 404 error, or the library is failing to load, it’s having trouble establishing an internet connection. There are several things that can cause this to occur. Below you will find a list of causes and solution ordered from most common to least common.

## [SignalRGB is blocked by Windows Firewall](https://docs.signalrgb.com/troubleshooting/library-and-404-issues#signalrgb-is-blocked-by-windows-firewall)

To allow SignalRGB through Windows Firewall, open Control Panel and navigate to `System and Security` . Then, select `Allow an App through Windows Defender Firewall` .

 ![](https://us1.discourse-cdn.com/flex015/uploads/signalrgb/original/1X/6f3c4234dc1c74f740e42ed0828d28d96cf1a990.png)

Then, click the `Change Settings` button. Scroll down to `SignalRGB` or `signalrgb.exe` and ensure all boxes next to it are checked. Then, click `OK` at the bottom of the page.

 ![](https://us1.discourse-cdn.com/flex015/uploads/signalrgb/original/1X/53a5318c7e6c8edaf301b80044fbc29fcf5c46f8.png)

## [SignalRGB is blocked by your antivirus](https://docs.signalrgb.com/troubleshooting/library-and-404-issues#signalrgb-is-blocked-by-your-antivirus)

Some antivirus software may block SignalRGB from communicating with the internet. To fix this, create an exclusion for the path `%localappdata%\VortxEngine` . Due to the wide variety of antivirus software software available, this process will differ depending on the antivirus you are using.

## [Your Windows username has non-standard English characters](https://docs.signalrgb.com/troubleshooting/library-and-404-issues#your-windows-username-has-non-standard-english-characters)

If your Windows username contains non-standard English characters (åéñòüç), SignalRGB may not function properly. Unfortunately, there’s no easy way to migrate one user profile folder to a new one. We suggest backing up whatever data you consider important and creating a new user account name without using special characters where you can later restore your manual backup.

## [You have IPv4 disabled](https://docs.signalrgb.com/troubleshooting/library-and-404-issues#you-have-ipv4-disabled)

SignalRGB communicates using the IPv4 protocol. If your network adapter has IPv4 disabled, SignalRGB will not function. To enable IPv4, open Control Panel and go to `Network and Internet` → `Network and Sharing Center` → `Change Adapter Settings` .

 ![](https://us1.discourse-cdn.com/flex015/uploads/signalrgb/original/1X/c597ac62ed38f19b2d7204493922d5eeafa49687.png)

Click on your network adapter and select `Properties` . Then, ensure the box next to `Internet Protocol Version 4` is checked.

 ![](https://us1.discourse-cdn.com/flex015/uploads/signalrgb/original/1X/37609807af0a614eb83fe5b8ce7f1b35982956b4.png)

Then, select `Properties` . In the popup window that opens, select `Use the following DNS server addresses:` and enter `1.1.1.1` and `1.0.0.1` . Then, click OK on all open dialog boxes.

 ![](https://us1.discourse-cdn.com/flex015/uploads/signalrgb/original/1X/3144d4361f288b7e57f825ad8493dfa5d57978a6.png)

## [Your country or ISP blocks access to certain content](https://docs.signalrgb.com/troubleshooting/library-and-404-issues#your-country-or-isp-blocks-access-to-certain-content)

If your country or ISP blocks access to certain websites or services, you may need to utilize a Virtual Private Network (VPN) to use SignalRGB.