Here’s the crux of the article in video form:

New updates are being added at the bottom of this story…….

Original story (published on April 10, 2023) follows:

Synapse X is a popular tool for software developers that mainly focuses on the development and execution of scripts. It can also inject scripts into popular games, and some “experimental” Roblox players tend to use Synapse X for this purpose.

Synapse-x-inline-1
Source

However, multiple Synapse X users are currently facing an issue where they are unable to run the tool due to a “Failed to download launcher data” error message.

Synapse X ‘Failed to download launcher data’ (Firewall bug)

According to reports, the issue started suddenly, and affected users receive the error message after a crash. The pop-up indicates that the problem is related to the network firewall.

synapse-x-failed-to-download-launcher-data-firewall-bug-1
Source (click/tap to expand)

@synapseupdates hi my synapse randomly stopped working for the past few days and I tried turning off my firewall it didn’t help and I turned off my antivirus and it still didn’t work. I don’t know what to do.
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so i turned on my virus protection and it deleted syanpse and i cant redownload it, it just shows ‘Failed to download launcher data’ when i try to click synapse launcher.exe
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Although users have tried disabling the network firewall, the software still crashes, suggesting that the origin of the problem is something else.

Potential workarounds

Unfortunately, there is no official acknowledgment from the Synapse X team about this bug. There are a couple of potential workarounds that could help.

A user suggested that you can run the tool without problems by disabling the antivirus, re-extracting the setup file, and reinstalling it. After completing the process, you can reactivate the antivirus.

synapse-x-failed-to-download-launcher-data-firewall-bug-2
Source

Another user suggested that using mobile data allows you to play while Synapse X is active, especially for those who use the tool as a “script injector” in games like Roblox.

Solution to the firewall fix (for me atleast)

I connect to my hotspot on my phone and I can play with synapse but when i connect to my internet doesnt work so idk temporary fix for me
Source

We will update this story as events unfold in the future.

Update 1 (April 11, 2023)

03:35 pm (IST): A Redditor has suggested a fix for the ISP-related issues. You can check it out below.

Synapse-temporary-fix
(Source)

Update 2 (April 12, 2023)

10:29 am (IST): Some users are now suggesting using a VPN in order to fix the Synapse X Firewall bug.

you have to use VPN, this is happening to everyone
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Get ProtonVPN. It’s free and it works. I just got it and I was able to open up Synapse X with no issues.
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Update 3 (April 13, 2023)

09:47 am (IST): It seems that Synapse X ‘Failed to download launcher data’ due to a Firewall bug seems to have been fixed now (1,2).

Update 4 (April 20, 2023)

09:20 am (IST): According to fresh reports, Synapse X is currently down for some users and they are again getting ‘Failed to download launcher data’ error.

04:30 pm (IST): Some user reports (1, 2) suggest that the recent outage with Synapse X has now been resolved.

PiunikaWeb started as purely an investigative tech journalism website with main focus on ‘breaking’ or ‘exclusive’ news. In no time, our stories got picked up by the likes of Forbes, Foxnews, Gizmodo, TechCrunch, Engadget, The Verge, Macrumors, and many others. Want to know more about us? Head here.

Jean Leon
1613 Posts

A tech enthusiast since ever. I like to always be up to date on the latest news in the industry and write about it. Twitter: @jean_ERdC

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