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Hi everyone,

I'm having trouble accessing my local network devices (a 3D printer and Raspberry Pi) using short hostnames like "http://impressora3d" or "http://impressora3d/". Firefox keeps blocking the connection with the "Looks like there’s a problem with this site" error page.

I've captured a network log using 'about:networking' and I can see that: 1. DNS resolution works perfectly and points to my local IP:

  "CompleteLookup: impressora3d has 192.168.1.10"

2. Firefox is upgrading the request to HTTPS (port 443) automatically:

  "nsSocketTransport::ResolveHost [...] impressora3d:443" -> "pushing io layer [0:ssl]"

3. The device rejects it because it only listens on HTTP (port 80):

  "Bad Socket 804b000d" (NS_ERROR_CONNECTION_REFUSED)

What I have already tried: - Disabled "HTTPS-Only Mode" entirely in settings. - Checked "Secure DNS" (DoH) settings (set to Increased Protection and added exceptions). - Cleared history and used "Forget about this site" on the hostname. - Typed "http://" explicitly.

Firefox still refuses to connect via plain HTTP (port 80). Is there any hidden 'about:config' preference or HSTS cache forcing this behavior for local unformatted domains?

Thank you!

I tried to go to Macys.com and got the following message:

Access Denied You don't have permission to access "http://www.macys.com/?" on this server.

Reference #18.6824c317.1773777776.8ce30f09

https://errors.edgesuite.net/18.6824c317.1773777776.8ce30f09

Please help as I haven't had this problem before to shop at Macys online. Thank you.

This browser is not letting me connect with my pension website. It allows me to sign in, but the pages with my account are not showing up. How do I get it to recognize the website as safe?

websites are being blocked when I click on links from my email account and I don't know why but I also want it stopped the websites are Stage32.com and https://course.fp-platform.online/learn/hRpTYcFi2UyZKzLm2gaOHg/theory

I access a couple weather sites many times a day. About once a week I get the "Access Denied" message shown below. That message is for wunderground.com, and I almost always get the same thing for weather.com at the same time. No other sites I visit experience this issue. While this is occurring, I can always open the site on Safari. And the issue always goes away on it's own usually after several minutes. I've cleared cookies and data for those sites and that doesn't clear it up...only waiting a few minutes works.

Does anyone have any thoughts on what might be going on?

'Access Denied You don't have permission to access "http://www.wunderground.com/weather/us/ia/cedar-rapids" on this server.

Reference #18.8aa03b17.1786700537.30ccea5b

https://errors.edgesuite.net/18.8aa03b17.1786700537.30ccea5b'

I am a business owner and I need to log into united health care provider portal. Mozilla will not allow me to access. I'm using this link: https://secure.uhcprovider.com/ and Mozilla will not allow me to go further. This is causing work stoppage. Chat GPT says the link is secure. HELP! I need access so I can get paid.

From Chat GTP:

https://secure.uhcprovider.com/ I checked that exact URL, and here’s the key point:

👉 secure.uhcprovider.com is actually configured with HTTPS and a valid SSL certificate—so under normal conditions, your browser should show it as secure.

So if your browser is blocking it or labeling it “not secure,” the problem is almost certainly local (your device/network) rather than a new issue with UHC.

After update, I am denied access to my Xfinity email account: You don't have permission to access "http://login.xfinity.com/login" on this server.

I edit a newsletter substack and sometimes I have links embedded in it. Mozilla denies me access to those links when I check the newsletter. Do I have to cancell Mozilla protection to have full access to the links in my newsletter from substack?

Something is wrong with your network configuration We checked your network configuration and found that the following domains are not accessible.

   hls-c.udemycdn.com

This may prevent you from viewing videos or significantly degrade video performance on Udemy. If you use an ad blocker, please check the ad blocker settings page, whitelist the domains above, and refresh this page to recheck your network configuration. If the problem remains or you are not using an ad blocker, please check your system network configuration or reach out to your IT team and ask them to whitelist these domains.

When attempting to load additional screen connected to my bank it does not work as intended. We trouble shot: we disabled Auto fill and PopUps. What other steps should I take?