This site can’t be reached

[eh123]

Using Vivaldi on Windows10 for a year now. Everything was working well, but since yesterday browser is unable to connect to any website. I had allowed Vivaldi through anti-virus. Uninstalled Vivaldi and installed latest version. W10 etc are all updated and reset winsock, netsh etc done. I am connected via ethernet. Modem/Router was shut down for an hour and restarted. None of the link/tiles from start page connect to internet nor by typing any url in the address bar. Tried Google DNS in IP4 but didn't work. I use browser without creating profile. Tried guest profile , didn't work.

Firefox, Edge, Chrome runs fine as usual.

Following error is showing when Vivaldi is opened.

This site can’t be reached
The connection was reset.
Try:
Checking the connection
Checking the proxy and the firewall
Running Windows Network Diagnostics
ERR_CONNECTION_RESET

Edit: Pausing Anti Virus didn't help.

[Pathduck]

@eh123 Hello and Welcome to the Vivaldi Community

ERR_CONNECTION_RESET

If this happens for all sites, it's almost guaranteed that something is blocking Vivaldi from accessing the network.

When I get that error (using Avast AV), it's usually due to the AV discovers I'm trying to access a blacklisted URL. But only for that URL.

If for all sites, then something is blocking the Vivaldi application itself. Possibly the update has changed Vivaldi's "file signature" and so the AV detects it as malware. You will need to whitelist Vivaldi's program in your AV and then report a false positive to your AV vendor.

[eh123]

Pausing Anti Virus (Kaspersky Internet Security) didn't help. Already whitelisted in AV.

[Pathduck]

@eh123 What is your browser version? I'm assuming 5.7 Stable since the release was yesterday?

Also what is your OS?

One thing you could test is try to install 5.6 as a Standalone install just for testing:
https://help.vivaldi.com/desktop/install-update/standalone-version-of-vivaldi/

You can get the older version here:
https://vivaldi.com/download/archive/?platform=win
You probably need the Vivaldi.5.6.2867.62.x64.exe

Install it somewhere, run it and see if it works.

[eh123]

@Pathduck Thanks for reply. Installed Standalone 5.6, worked only first time / once. Fails to connect on subsequent launches. OS Windows 10.

[Pathduck]

@eh123 OK that's strange. There's really nothing much you can do about this in Vivaldi itself.

There's something on your system blocking Vivaldi from accessing the network, so you'll need to dig deeper. I can't really give anything but general advice as I don't know how your system is set up.

[eh123]

@Pathduck Thanks for reply. I loved Vivaldi Tabs, sad to let it go.

[eh123]

After working OK for a year and half the problem has resurfaced in a new way.

PC and Laptop connected to same router via separate LAN cables.

Laptop can open a particular website on Vivaldi but PC can not.

The said website opens successfully on chrome, firefox, edge.

PC gives error
This site can’t be reached
The connection was reset.
Try:
Checking the connection
Checking the proxy and the firewall
Running Windows Network Diagnostics
ERR_CONNECTION_RESET

Laptop Vivaldi version 6.0.2979.15 (Stable channel) (64-bit)
PC Vivaldi version 6.9.3447.54 (Stable channel) (64-bit)
Both run Standalone version

PC also has regular Vivaldi version 7.0.3495.18 (Stable channel) (64-bit), which opens NONE of the website. It fails completely.

No proxy or VPN

OS W10

Trouble shooting done:
net reset etc.
reinstall Vivaldi on PC, regular and standalone, none works.
Modem router reboot.
Switching cables and ports.
Whitelisted in Antivirus.
Pausing AV did not work.

Edit: Updated.

[DoctorG]

@eh123 if you use older Vivaldi versions the remote server can detect this an close the connection.

Please try the troubleshooting steps, including testing in a clean profile and disabling adblocking/extensions:
https://help.vivaldi.com/desktop/troubleshoot/troubleshooting-issues/

---

Do you use a company PC?
Is the Vivaldi managed (see internal page vivaldi:management )?
Is the Vivaldi managed by policy (see internal page vivaldi:policy )?
Do you use VPN extension?
Do you use special DNS settings?

[pixro]

@eh123 Same issues here on MacOS.
• MacOS 15.1.1
• Vivaldi 7.0.3495.27 (Stable channel) (arm64)
• New install, no cache issue etc. Fresh installs, profiles have no change
• Can access site from other browsers (exact same url)
• Disabled all security, whitelisted IP etc

This site can’t be reached
https://xx.xx.xx.xxx:xxxx/ is unreachable.
ERR_ADDRESS_UNREACHABLE

[EricJH]

Is https://xx.xx.xx.xxx/ the actual site you are trying to reach? That address does not exist: there is no DNS resolve. Try running a ping to xx.xx.xx.xxx and it will state:

Ping request could not find host xx.xx.xx.xxx. Please check the name and try again.

[Zalex108]

@EricJH

Hi,
I guess it's just the example, since some are effected and the user don't remember the specific URL, or it's preferred to not share it publicly.

[DoctorG]

@pixro Use system tools to check if reachable in your LAN
traceroute sub.domain.tld
traceroute IP.IP.IP.IP

[pixro]

@DoctorG Pings seem to be going fine. I can also reach the location from other browsers from but Vivaldi. Interesting as I found a few other sites are are having the same problem ... public sites like a utility website. Can't find any setting that would be blocking them inside Vivaldi. I can get to the sites as expected from other browsers.

[DoctorG]

@pixro Please try the troubleshooting steps, including testing in a clean profile and disabling adblocking/extensions:
https://help.vivaldi.com/desktop/troubleshoot/troubleshooting-issues/

[pixro]

@DoctorG

So...the issue happens across many sites. Can't get to USPS account for example. Blocked from own server. A third party webhosting service. There were a few news articles (not recalling url atm.)

Just installed Vivaldi for the first time a few days back. I have created fresh profiles, new installs...none of that seems to do anything. Disabled any security settings while testing..still no luck.

I am trying to make a go and having Vivaldi be main browser of choice but that is challenging when you keep hitting (seemingly random) can not load or find server errors.

Yes, I'm sure it has to be something in my settings yet can't image what because not much has been modified....and new accounts do the same thing. Yes, these sources are easily access through Safari and Brave, but not Vivaldi.

[mib2berlin]

@pixro
Hi, some new users enable the Vivaldi ad blocker and then install an ad blocker extension.
Instead of blocking ad's it block pages completely.
Check this in the Privacy Settings:

Always add links to such pages please, no idea what USPS even is, I and many other users here don't want to search for the user.
Make it easy to help you.

Cheers, mib