App-widgets.jotform.io sent an invalid response / Connection reset error

Four sections of this form (1. to 4.) having this error only from the client site.

Please help me to figure out the cause and come up with a solution.

Thank you!

Hi Gueipin,

Thanks for reaching out to Jotform Support. I'm an AI assistant. I'll do my best to help you until someone from the support team is available.

The error "app-widgets.jotform.io sent an invalid response. Connection reset" usually indicates a connection issue between the client and Jotform's widget server. This can be caused by network interruptions, firewall restrictions, or browser-related problems.

Here’s how to troubleshoot:

1. Clear your browser cache and try accessing the form again.
2. Check your network/firewall settings to ensure they are not blocking Jotform domains.
3. Try a different browser or device to see if the issue persists.

If the problem continues, please provide more details about the client environment or any specific widgets used in those sections.

Give it a try and let us know how it goes.

Tried all the suggested troubleshoot tips, but none worked.

Hi Gueipin,

Since the initial troubleshooting steps didn't resolve the issue, the connection reset error might be related to network or firewall restrictions on the client side that specifically affect the app-widgets.jotform.io server.

Here are additional steps to try:

1. Clear your form cache by following Jotform's guide on clearing form cache.
2. Check if any security software or firewall on the client side is blocking connections to Jotform's widget server.
3. Test the form on a different network to rule out network-specific restrictions.

If the issue persists after these steps, please share more details about the client environment or any error logs available.

Hi gp_mcsi,

Thanks for reaching out to Jotform Support. You mentioned that the issue happens on the client's site. Do you mean the form is embedded on a website? If so, can you provide us with the URL of the website where the form is embedded so we can check it out?

Once we hear back from you, we'll be able to help you with this.

No, it's not embeded on a website. I am calling the form directly.

Hi gp_mcsi,

If you can take a screenshot of what’s happening, that'll help us to understand better what’s going on. Let me show you how to post a screenshot to our Help Center:

1. On the Help Center page, scroll down to the Your Answer section and click on the Image icon.

2. Drag and drop your image into the Upload box, or click on it and select your file.

3. Then, click on the Add button in the bottom-right corner of the window.

4. To resize it, click on your screenshot and then click on one of the boxes in the corners, and drag it inward.

5. Once you're finished, click on the Post Answer button at the bottom right of the Your Answer section.

That's it. Once we hear back from you, we'll be able to help you with this.

Hi gp_mcsi,

I accessed the form in Chrome, which is the same browser you used, and I could not replicate the issue as shown below.

Are you using a VPN? If so, can you disable it in the meantime and see if the issue persists? In the meantime, I cleared your form caches to refresh the forms. If the issue remains, let us know.

Reach out again if you need any other help.

No, I am not using VPN. I do have a Unifi Security Gateway which does not block any outbound traffic. Otherwise you would not see the partial page.

Hi gp_mcsi,

Can you try to disable that if it's possible? This way, we can isolate whether the issue is related to Unifi Security Gateway. If you have another device that doesn't have the program enabled, installed, or connected, that would be better.

Give it a try and let us know how it goes.

Problem solved by using google's DNS server in place of Comcast's.

Thanks!

I had a customer with this problem yesterday - first time I encountered this. Since the images used in the form were being pulled from our domain site I appended a datetime stamp to the images so that the images are not cached. In his case this seems to have solved it. I'm not sure if it applies to all cases listed here but might be worth trying a similar approach to images or possibly other remote resources you link to from your form.

Hi allfrom1supply,

To confirm, does your customer have a Unifi Security Gateway? If yes, some widgets might be blocked by their UniFi Security Gateway due to its content filtering feature, which can mistakenly identify the widget's functionality as requiring a block. To resolve this, they can either disable content filtering for the specific network or use the user solution above, where they use the Google DNS server in place of Comcast's.

Reach out again if there’s anything else we can do for you.

If it happens again and I can't figure out a way to work around it without involving the customer I will put together a troubleshooting page.

Thank you for your reply.