If you've ever tried visiting a site like yfdnzfa.com or nandosmenuuk.com and saw the message ERR_BLOCKED_BY_CLIENT nandosmenuuk.com pop up — but only on one computer and not on others — you’re not alone. This error can be puzzling, especially when the website works perfectly fine elsewhere. In this post, I'll explain what this error means in plain English, why it usually happens, and provide a safe troubleshooting workflow so you can pinpoint and fix the problem without guessing.
What is ERR_BLOCKED_BY_CLIENT?
The ERR_BLOCKED_BY_CLIENT message is a browser-side notification. It means that something on your computer or within your browser is actively blocking the site or page from loading. It's not a server or internet issue — it's a client-side block.
In simple terms: your device’s setup is saying, “Nope, you can’t load this page.”
Why does ERR_BLOCKED_BY_CLIENT happen on only one computer?
If you notice that nandosmenuuk.com or yfdnzfa.com work perfectly on several devices but only throw this error on one, there’s usually a very specific reason:
- Your browser on that particular device has an extension or add-on installed that blocks certain requests. Your settings or security software on that device are stricter than on others, causing the page to be blocked. Browser extension syncing may have misconfigured or activated blocking features uniquely on that device.
Let's break down the most common cause:
Browser Extensions That Block Pages
Ever notice how many popular browser extensions like ad blockers, privacy guards, or security tools monitor incoming web requests and block anything they believe is suspicious, irrelevant, or invasive. Common examples include:
- Ad blockers blocking ads or trackers Privacy extensions blocking scripts known to track users Security extensions blocking risky or malicious sites
Often, extensions work by scanning URLs or page elements and deciding whether to allow or block them. When they block something — whether on yfdnzfa.com or nandosmenuuk.com — the browser shows the ERR_BLOCKED_BY_CLIENT message.
Different Extensions, Different Devices
A common confusion is that if you sync extensions between devices, they should behave identically everywhere. But that’s not always true. Sometimes:
- One device disables or has different settings for an extension. One device has an extra extension nobody else has. Extension updates haven't synced properly.
This results in webpages being blocked on only one computer — even if others use similar setups.
What causes blockages on restaurant menu websites?
You might have visited sites like nandosmenuuk.com expecting restaurant menu details, prices, or opening hours. A common mistake is misunderstanding what the website contains. Some pages or URLs may be blocked by extensions because they include tracking scripts or ad components, or simply due to how the site serves content. For example, if a tool blocks third-party requests, some menus or price info might fail to load completely.
Remember: if you don’t see prices or hours on a menu site, it could be because certain page elements are blocked by client-side protections, resulting in incomplete content.
The Safe Troubleshooting Workflow
When you encounter ERR_BLOCKED_BY_CLIENT, here is my step-by-step checklist to troubleshoot safely and effectively:
Ask What Changed Just Before the Problem Started Did you install a new browser extension? Change security settings? Update software? Knowing what changed helps pinpoint the cause. Try Incognito/Private Mode 
Verify if your browser’s sync settings have different extensions enabled or different configurations across devices, especially between working and blocked devices.
Whitelisting vs Disabling Protection: Why It Matters
A common mistake is to just “turn off all your protection” to get the page working. One client recently told me thought they could save money but ended up paying more.. While disabling extensions or security features will usually fix ERR_BLOCKED_BY_CLIENT problems temporarily, you lose important protections:
- Ad blockers stop intrusive ads and speed up browsing. Privacy tools reduce tracking and protect your data. Security extensions block malware or phishing sites.
Instead, it’s best to whitelist or allow specific trusted websites like nandosmenuuk.com or yfdnzfa.com. This approach keeps your protection active everywhere except the sites you trust — maintaining a secure and smooth browsing experience.
Quick Example of Restaurant Menu Price Info from Source
Some restaurant menu sites provide price details like this (word_count: 35):
Dish Price (£) Peri-Peri Chicken 8.95 Vegetarian Burger 7.50 Spicy Rice 3.25If you land on a page missing this info, consider the chance your client-side blocking tools hid it.
Summary: Fixing ERR_BLOCKED_BY_CLIENT on One Device
- ERR_BLOCKED_BY_CLIENT means something in your browser or device is blocking the page from loading. Most commonly caused by browser extensions like ad blockers that filter web content. Extensions and settings can differ between devices, so one device might block sites others don’t. Use a clear, stepwise troubleshooting method: incognito test, extensions off one by one, whitelist trusted sites. Prefer whitelisting over full disabling to keep safety and usability balanced.
If you follow this approach for sites like yfdnzfa.com or nandosmenuuk.com, you’ll get back your full restaurant menu details — like prices and opening hours — without sacrificing browser safety. And crucially, you'll know exactly what fixed the problem.
Have questions or need help with a specific extension? Drop a comment or reach out for personalized support!