I can't access certain websites in Windows 11: causes and solutions

That a site does not load in Windows 11 and the message "This website cannot be accessed" appears is more common than it seems, and sometimes it causes frustration because the message does not clearly indicate what is wrong. The good news is that these are almost always network, DNS, or cache issues, and can be fixed with a few simple tweaks..

Based on the best methods and real cases collected in support sources and technical guides, here you will find a clear path to identify the cause and resolve it. We include everything from quick checks (restart the router or clear browser cache) to more advanced steps (flush DNS cache, change DNS servers, validate services and repair system files).

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Why do I see the message “This website cannot be accessed”?

That message is a wildcard used by browsers like Chrome for multiple errors., which is why it is so imprecise. It may be accompanied by codes such as DNS_PROBE_FINISHED_NXDOMAIN or ERR_CONNECTION_RESET, among others, which point to different causes: DNS resolution failure, connection interruptions or network session resets.

In simple terms, the most common causes are related to connectivity, DNS and cache issues.. If the network briefly goes down, if your computer caches outdated data, or if the DNS you use (usually your Internet provider's) responds incorrectly, The browser is unable to locate the site or complete the data exchange.

Firewalls and antivirus programs also play a role, sometimes unexpectedly blocking connections.It is rare for legitimate sites to be blocked, but They can do so by strict rules or false positives. Also, remember that a cut from the website itself (or your accommodation) can also cause these symptoms.

Although Chrome offers basic solutions on the error page, it is advisable to perform a step-by-step diagnosis. to leave nothing unnoticed and rule out causes in an orderly manner.

Quick and ordered solutions (from least to most difficult)

Start with the simplest and move forward as you rule out causes. This order helps save time and avoids making unnecessary changes..

1. Restart your internet connection

Even if you have an active network, restarting your router or modem effectively resolves temporary issues.. Unplug the device, wait about 60 seconds, and then turn it back on. When the connection is restored, try opening the site again.This process only takes a couple of minutes and It is the first recommended measure.

2. Temporarily disable firewalls and antivirus

To rule out local blocks, disable the firewall. Windows and any third-party antivirus during the test. If the page loads, you have identified the source of the blockage and you can adjust rules or add exceptions. If it doesn't load, Reactivate protection and continue with other steps. Actually, It is not common for a firewall to block legitimate sites, but it is advisable to check it.

3. Clear the browser cache

The cache stores images and files to speed up loading., but if it is corrupt or outdated may prevent the sites from functioning properly. In Chrome: Settings > Privacy & Security > Clear Browsing Data. Brand Cached images and files and press Delete data. Reopen the website after clearing the cache to check if the problem has been solved.

4. Flush the system's DNS cache

Windows caches domain resolution (DNS) to speed up browsing. If that information is outdated, The system may attempt to access incorrect IP addresses. Open the Symbol of the system as administrator and run: ipconfig / flushdns. This forces the system to resolve domains from scratch..

5. Change your DNS servers

By default, your connection uses your Internet provider's DNS., but you can specify other, more reliable or faster ones. On Windows: Control Panel > Network and Internet > Network and Sharing Center > Change adapter settings. Right-click on the active adapter: Properties. Choose Internet Protocol version 4 (TCP / IPv4) and click Properties. Brand Use the following DNS server addresses and enter the known values.

For example, the public DNS of Google: 8.8.8.8 and 8.8.4.4. There are other free DNS servicesBy applying the changes and testing the page, the resolution often improves, and some pages even load faster.

On macOSgo to System Preferences > Network, select your network, press Advanced and navigate to the tab DNS. Add the desired DNS With the “+” button, confirm and save the changes.

DNS, Cache, and Connectivity: What You Need to Know

The same error message can be due to different causes, so it is advisable to check the basics before going deeper. If after restarting the router and clearing the cache you still have problems, switching to a public DNS usually helps a lot, especially with errors like DNS_PROBE_FINISHED_NXDOMAIN.

The purpose of clearing cache (browser and DNS) is to remove obsolete data that may direct you to incorrect routes or old resources. When cleaning, a clean recharge is performed and a fresh resolution is obtained..

When the cause is in security softwareTemporary disabling isn't usually the definitive solution, but it helps confirm if the problem is there. Adjust rules, create exceptions, or modify firewall or antivirus settings to resolve conflicts.

If it is still not resolved, you need to check advanced settings. and rule out other factors in Windows 11, such as background services, profiles, or driver or system repair issues.

Real-life case and advanced checklist in Windows 11

A Windows 11 user on an ASUS VivoBook 15 reported being unable to access GitHub and other websites., with the same error in Chrome, Firefox and Edge. He tried several solutions without success, which provides a good checklist for your own case:

• Cross check: On other devices on the same Wi-Fi network, pages open without any problems.
• Try other networks: The affected device still cannot access, even on different Wi-Fi networks.
• Incognito mode and VPN: no change in results.
• Uninstall third-party antivirus y disable firewall: no effect.
• Scan of malware with Windows Security: no findings.
• Use the network troubleshooter: no errors detected.
• Clear browsing data and clear DNS cache.
• Reset TCP/IP and clear specific caches.
• Remove extensions in Chrome.
• Run commands one-to-one network:

netsh winsock reset
netsh int ip reset
ipconfig /release
ipconfig /renew
ipconfig /flushdns
ipconfig /registerdns

Also verified that key network services were active and starting automatically.: Connection Manager (Wcmsvc), NetBIOS over TCP/IP (Imhosts), DHCP Client (Dhcp), DNS Client (Dnscache), Network Autoconfiguration (dot3svc, WlanSvc), SSDP Discovery (SSDPSRV), UPnP (upnphost), Resource Publishing (FDResPub).

In such cases, it is advisable to check that: There are no proxies configured on the network, there are no restricted policies, create a new local user to rule out profile issues, and update the network adapter drivers..

If the problem only affects certain domains and other computers work fine, it's probably a combination of DNS, caching, or policies. After the basic steps, changing DNS and repairing the system are usually effective actions.

Additional Microsoft recommendations and browser compatibility

Microsoft support advises taking three main actions when browsers do not load sites after updates or major changes.: Update Windows, perform a clean boot, and repair the system with DISM and SFCThese steps help resolve damaged or outdated components.

1) Update Windows

Go to Start > Settings > Update & Security > Windows Update and apply all pending updates. A recent patch may fix network or browser errors..

2) Perform a clean boot

Disables non-essential services and programs, increasing control over what can interfere with connectivity.If the pages work in clean boot mode, reactivate the services in groups to identify which one is causing the problem.

3) Run DISM and SFC to repair system

Open the command console as administrator and execute the commands in order:

DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth
sfc /scannow

Upon completion, if SFC displays a "Check Complete" message, restart and test the problematic pages again..

Additionally, collect specific details such as: Exact error message, antivirus or VPN usage, recent modifications, and system updates to expedite a more accurate diagnosis in technical support.

Internet Explorer Compatibility (Windows 10 and 7)

In environments still using Internet Explorer, certain sites may display incorrectly.. The option of Compatibility View can fix old displays by emulating an older rendering mode. You can learn how to create shortcuts for similar problems in this guide if you want a quick and personalized solution.

Windows 10: open IE, click on Tools > Compatibility View Settings, add the site's URL and confirm. To deactivate, remove that URL from the list.

Windows 7 (IE11): If the site is not supported, use the button “Compatibility View” in the address bar. To clear the list of compatible sites: Tools> Internet Options and in Exploration history, Select Delete.

Remember that these settings are for display purposes only and do not resolve login issues. In Windows 11, we recommend using Edge or Chrome, but in legacy environments, these settings may be helpful..

Final recommendations and quick list

When faced with the message "This website cannot be accessed", prioritize the actions in this order: Restart the router, temporarily disable firewall and antivirus, clear your browser cache, empty hidden dns and, if it still persists, switch to public DNS servers. If the fault persists, Update Windows, perform a clean boot, and repair the system with DISM/SFC. If it only happens with a specific website, It could be a problem with the site or your hosting..

• Basic actions ordered: Reset connection, check security, clear caches, change DNS, and repair Windows.
• Remember to activate security once the tests are over. and note any changes to revert if necessary.
• If no measures work and only affect a specific site, contact site support to check if the site is down or has restrictions.

With this basic guide you will cover the most common causes (connectivity, DNS and cache) and the repairs that usually give the best results, ultimately leaving external problems beyond the user's control, such as server failures or network policies that can prevent access to certain sites in Windows 11..