Unable To Download Synapse X – An Ultimate Guide to Fix

Synapse X is a free scripting utility tool and an advanced version of Synapse Lua. This is an essential tool for Roblox players as it helps them to modify the games on the platform.

Although it has been in use for many years, users are facing some downloading issues lately. If you are unable to download Synapse X, don’t feel alone because you are not the only one facing this problem.

This download error might occur because of various reasons. For example: firewall/antivirus applications. If you have recently faced this error, no worries, we have got your back. This guide contains information that might be helpful to you.

How to fix Synapse X not downloading bootstrapper files?

There are different ways to deal with this error. We have explained some of the methods that are commonly used to fix this issue.

Method 1: Launch Synapse X in administrator mode

Some users claim that running the tool in the administrator tool can fix the issue. So you should give it a try too. Just follow the steps as it is and you should be good to go.

  • Open Synapse X by right-clicking on it.
  • Click on the option “Run as administrator.”
  • Select “Apply” followed by “OK.”
  • Once you are done with the above steps, proceed to restart your computer and then launch the tool again.
  • Now check if the problem is resolved. If not, then move on to the next method.

Method 2: Disable antivirus software and Windows Defender

Sometimes the antivirus program installed on your computer might recognize Synapse X as malware and hence block its functionality.

In case, you don’t have anti-virus software in your system, then it could be the Windows Defender limiting the features of this app. To run this app without complications, add it to the whitelist section.

As for the antivirus software, you should just disable the scan feature for this app. It is better than disabling the entire software. This could be done via Windows Defender.

Here are the steps to be followed:

  • Click on the Start Menu.
  • Search for Virus & Threat Protection.
  • Select “Manage Settings” under the Virus & Threat Protection section.
  • Go to the Exclusion section, and click on the option “Add or Remove Exclusions.”
  • Select “Add an Exclusion” followed by “Folder” from the list.
  • Go to the Synapse X folder and click on it.
  • After completing these steps, restart your PC and open the app again. The issue you were facing before should be fixed by now.

Method 3: Disable Advanced Security by Xfinity

Many users rely on the xFi Advanced Security for a safer internet browsing experience. Although it provides protection, it can create issues for the Synapse X app.

If you have the xFi Advanced Security installed on your PC, turn it off. You can disable the software by following these steps:

  • Start by running the xFi Advanced Security app.
  • Click “More.”
  • Go to the My Services section and turn off the app.
  • Once you are done, try to open the Synapse X app again and see if the problem is resolved.

The xFi app might block Synapse X from functioning as long as it is active. Once you disable the software, it shouldn’t create any more issues for the Synapse X app.

Method 4: Use a VPN

If you are unable to download Synapse X, you should try using a VPN app. You will find both paid and free VPN apps online. It is always advised to use a paid VPN as it is more efficient than a free one. Also, a paid VPN app has more features than a free app.

Once you download and install a VPN on your PC, connect it to the server. After that, you can try downloading Synapse X. 

Sometimes, you encounter issues while downloading Synapse X because your ISP has blocked an important related file. You can overcome such problems by using a VPN app.

Look for a VPN with thousands of servers in different regions, a network kill switch, or a no-log policy. These are some of the important features that you must look for while choosing a VPN.

Method 5: Try another network

If there’s a network connectivity issue, it might interfere with the download process of the app. The only logical solution to this is to try a different network. Alternatively, you can also use your mobile phone’s internet through a hotspot.

However, if the issue remains, it means the network is not the problem. In that case, you should try some other method mentioned in this post.

Synapse X Is Stuck On DLL Download

If the app gets stuck on DLL download for hours, you should consider deleting the Synapse X/bin/folder. Along with that, you should also turn off auto-launch.

After that, you can try launching Synapse X with the administrator and the error should no longer appear.

Before downloading Synapse X, you should clean and boot your system. You must also end any unwanted processes via Task Manager.

We will suggest you use File Explorer to extract the Synapse archive. This is a better option than using a file archive utility.

If you are still having the same issue, then you should get the PC Repair Tool. It is great software and is rated highly by users. With the help of this software, you can find Windows issues and fix them.

PC Repair Tool can fix a wide range of issues on your Windows computer. This software can be downloaded from a trusted web source. Once the software is installed on your device, click “Start Analysis.” This will find Windows issues that could be causing problems on your PC.

Click “Fix Everything” to fix the detected issues. This might take some time, so you need to hold your patience.


Failing to download Synapse X is a common problem. Instead of stressing yourself, you should try these fixes to get the app installed and running. In some cases, you might have to try more than one method to solve the issue.

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