It's puzzling when YouTube videos play in high quality, but Yandex search or its services don't open. Users often assume the problem lies with the device itself or the router, but the reality is usually more complex. Partial internet availability indicates that the physical connection to the global network is maintained, but there are obstacles at the level of routing requests to specific domains.
This scenario can occur for a variety of reasons, from a simple DNS cache overflow to more complex security protocol conflicts. It's important to understand that YouTube consumes traffic differently than text pages and uses different network paths. If browser If Yandex's domain name can't be resolved to an IP address, the page won't load, even if Google's video servers are running smoothly.
In this article, we'll take a detailed look at the technical reasons for this network behavior. We'll cover DNS settings, the impact of antivirus software, provider specifics, and quick diagnostic methods. A common reason for Yandex services being blocked while YouTube is running is incorrect operation of the provider's DNS servers or blocking at the IPv6 protocol level. Follow the instructions to regain access to all resources.
DNS server issues and their impact on access
The most likely reason for the situation when some sites open and others do not is a malfunction DNS serversDNS (Domain Name System) works like the internet's phone book, translating human-readable addresses (like yandex.ru) into machine-readable IP addresses. If your provider provides DNS servers that are temporarily unresponsive or have outdated records for Yandex domains, the browser simply won't know where to send the request.
YouTube may continue to work because its IP addresses are already cached by your router or computer, or they use more robust protocols. Meanwhile, requests to Yandex require a new DNS lookup, which fails. This is a classic example of how domain resolving affects user experience.
How does DNS cache work?
A DNS cache is a temporary storage of domain name and IP address mappings on your computer. It's used to speed up the loading of frequently visited websites. If a cache entry is outdated or corrupted, the browser will attempt to use the wrong address, resulting in connection errors even if the website itself is working properly.
To resolve the issue, it's often enough to change the DNS servers in your network card or router settings to public and reliable ones, such as those from Google or Cloudflare. This will bypass any local ISP issues.
- 🌐 Google DNS: 8.8.8.8 and 8.8.4.4 are the most popular servers with high response speed.
- 🛡️ Cloudflare DNS: 1.1.1.1 and 1.0.0.1 are focused on privacy and phishing protection.
- ⚡ Quad9: 9.9.9.9 - servers blocking access to known malicious domains.
IPv4 and IPv6 protocol conflicts
Modern Internet providers are increasingly implementing the protocol IPv6, which is intended to replace the aging IPv4. However, not all websites and services support the new standard equally well, or their implementation is flawed. YouTube has long been successfully operating in an IPv6 environment, while some Yandex services may attempt to use this protocol and encounter timeouts if routing is configured incorrectly.
If your router or computer prioritizes IPv6, and your ISP doesn't ensure stable operation of this protocol for all resources, a situation of partial availability will arise. The browser will spend a long time trying to establish a connection via IPv6, and only after a timeout (if fallback is enabled) will it try IPv4, which the user perceives as "not loading."
⚠️ Attention: Disabling IPv6 may temporarily resolve the issue, but it's not a permanent solution. It's best to check your router settings to ensure tunneling is working properly or contact your ISP for up-to-date TCP/IP stack settings.
You can check which protocol is currently being used via the command line. In Windows, this is done with the command ipconfig /allIf you see a lot of addresses starting with fe80:: or have a complex format, then IPv6 is active. For diagnostic purposes, you can temporarily uncheck the "Internet Protocol version 6 (TCP/IPv6)" checkbox in the network adapter properties.
The impact of antiviruses and firewalls
The security software on your computer may be the hidden culprit behind the problem. Antiviruses Built-in firewalls often have "Network Protection" or "Web Filter" features that scan traffic in real time. Sometimes these modules malfunction, mistakenly flagging safe Yandex scripts as threats while allowing YouTube traffic through without issue.
The problem often lies in the HTTPS scanning function. The antivirus attempts to replace the site's certificate with its own to check the contents of encrypted traffic. If the Yandex certificate wasn't correctly added to the trusted list or there's a conflict between encryption versions, the connection will be terminated. This is especially true for Kaspersky, ESET And Avast.
To test this hypothesis, temporarily disable your firewall or antivirus web protection. If Yandex works immediately, the issue is with your security settings. Don't leave your computer unprotected for long; it's best to add the website to the exceptions list or update your antivirus databases.
- 🔍 Checking logs: Open your antivirus event log and look for blocking events that coincide with login attempts.
- 🔄 Update: Make sure your antivirus software is up to date, as older versions may not work correctly with new encryption protocols.
- 🚫 Exceptions: Try adding the domains yandex.ru and ya.ru to the HTTPS scanning exclusion list.
Provider-side failures and routing
The internet consists of many interconnected networks. Your ISP may have excellent routing to Google servers (which owns YouTube), but have problems with the communication channels leading to Yandex data centers. This phenomenon is called BGP leak Or simply lost routes. In this case, the problem isn't in your home, but "somewhere in the cloud."
ISPs may also use traffic filtering. Sometimes this is done to comply with laws, sometimes due to equipment configuration errors. If YouTube works but Yandex doesn't, your ISP may be using specific DNS or Deep Packet Inspection (DPI) filtering methods, which affect different domains differently.
| Symptom | Probable cause | Action |
|---|---|---|
| It doesn't load on only one device. | The problem is in the OS or browser | Reset TCP/IP, clear cache |
| Doesn't load on all Wi-Fi devices | The problem is with the router or provider. | Rebooting the router, changing DNS |
| Websites are loaded via mobile internet | Blocking or failure at home provider | Call the provider's technical support |
| Only VPN helps | Blocking at the highway level | Using workarounds |
To understand where exactly the connection is broken, you can use the command tracert (trace route). This will show the path the data packet takes. If the interruption occurs at the first or second node, the problem lies with the provider. If it occurs further, the problem may be with Yandex or the backbone operator.
Browser settings and extensions
Sometimes the reason is trivial and lies in the browser itself. Conflicting extensions, an overflowing cache, or incorrect proxy settings can block access to certain resources. For example, ad-blocking extensions (AdBlock, uBlock) may mistakenly detect Yandex scripts as advertising and block the entire page from loading.
It's also worth checking your proxy server settings. In some cases, malware or malfunctioning programs change system settings, redirecting traffic through a non-functional proxy. This often results in some websites (like YouTube, which can bypass the system proxy in favor of its own connection) working while others don't.
Try opening the Yandex website in Incognito mode. Extensions are usually disabled in this mode. If the website opens, one of your installed extensions is to blame. Disable them one by one to find the culprit.
☑️ Browser diagnostics
Command Prompt: Reset Network Settings
If simple methods don't help, you should perform a deep reset of your operating system's network settings. This will clear the DNS cache, reset routing tables, and update IP addressing. This is the most effective way to fix TCP/IP stack software errors.
You will need administrator privileges to perform these operations. Open Command Prompt (CMD) or PowerShell by right-clicking and selecting "Run as administrator." Enter the following commands one by one, pressing Enter after each:
ipconfig /flushdnsipconfig /registerdns
ipconfig /release
ipconfig /renew
netsh winsock reset
After executing the last command netsh winsock reset The system will prompt you to reboot. Be sure to do so. This step restores the Winsock directory, which often becomes corrupted after installing network drivers or viruses, causing strange internet access issues.
⚠️ Attention: Team
netsh winsock resetResets network socket settings to factory defaults. If you have specific network virtualization software (e.g., VirtualBox, VMware) or older VPN clients installed, they may require reinstallation or reconfiguration after this procedure.
Frequently Asked Questions (FAQ)
Why does YouTube work but other websites don't?
YouTube uses its own dedicated bandwidth and CDN (content delivery networks), which may be less susceptible to local DNS or routing failures than regular websites. Furthermore, YouTube's IP addresses are often cached more aggressively.
Can a virus block Yandex?
Yes, some types of malware modify your hosts file or DNS settings to redirect popular search engine requests to phishing sites or simply block them so you can't find information about the virus.
Will changing browser help?
If the issue is related to the cache, extensions, or settings of a specific browser, then yes, launching a different browser (for example, Firefox instead of Chrome) may temporarily resolve the problem. However, this doesn't address the root cause if it's system or network related.
Do I need to reinstall Windows?
In 95% of cases, reinstalling the OS is not required. Access issues can be resolved by resetting network settings, checking DNS, and updating drivers. Reinstallation is a last resort when the software issue cannot be localized.