And due to this, your devices like PC, tablet, or mobile are unable to connect properly with the particular website’s backend at that moment. Well, you may get connected with it in the future but are unable to access it at a particular time and therefore start seeing the error message on your screen. After investigating the particular error, we find out there are many different reasons that trigger the error message on your screen. So, before heading towards the fixes, it is important to understand the common causes responsible for the HTTP 1.1 Not Available:
Poor Internet connection: One of the most common reasons, behind the error, is the poor or limited bandwidth. And if your internet is not configured properly, you are more likely to get the error on your screen when accessing a website. So, check for your internet connection speed or connect to a different connection.Website Backend Problems: Another possible reason for the error is the backend problem with the themes or the plugins used on the particular website. This may prevent the request for reloading the webpage and displays the status code error on the screen. In this case, the problem will be fixed by the website’s admin.Outdated or Corrupted Browser: If you are running an outdated or corrupted browser then this can cause issues and be unable to function properly. Sometimes the outdated browsers start functioning slow and are unable to access particular websites. So, check for the latest updates available or reinstall the updated browser version.Windows Add-Ons: If by default Windows has enabled some Add-ons, then this might be conflicting with the website while loading and prevent it from loading. So, make sure to disable the add-ons on your Windows system and fix the error.Corrupted Cache: The browsers store cache on the hard disk to speed up the website loading process on the web. But sometimes the stored cache gets corrupted and starts causing issues. So, clearing the temp files and corrupted cache may solve the error for you.DNS Issue: If your Windows default DNS server is down then the internet connection may not work properly and unable to access some websites. You can modify the DNS server to fix the error.Low Disk Space: In some serious circumstances you start seeing the error due to the low disk space or your system is running out of space and this may prevent the webpage from loading. In this case, clearing the disk space fixes the problem for youUnusual Resources: It is not uncommon to start facing the error when the web page you are accessing is low on resources and the traffic has exceeded the online users of that particular website on your system. You can resolve the error sometimes easily by refreshing the website. But to fix it permanently the website owner needs to upgrade the server.
As you are now familiar with every possible culprit responsible for the error. Let’s try some of the workable solutions used by other affected users to successfully get to the bottom of the error and fix it completely.
Preliminary Basic Fixes
Before starting with other essential fixes here it is suggested to start following the quick tweaks as this works for you to solve minor glitches and bugs responsible for the error. Reboot your Devices – Very first it is suggested to reboot your devices, sometime a simple restart solves the internal glitches and bugs that cause the error. So, first, disconnect your PC or laptop from the internet and switch off the router. And switch off your system completely, wait for 5 minutes at least and turn ON all the devices. Once your system boots, visit the problematic website and see if the error is fixed. Refresh your Browser – Many times refreshing the browser solves glitches and issues. So, refresh your browser by pressing the CTRL + R icon and try visiting the webpage again. If still see the error then close your browser completely and wait for 2-3 minutes. Now relaunch your browsers and check if the issue is fixed. Moreover, if still getting the error message, then accessing the page on another browser makes works for you to solve the error.
Try Accessing the Unified Gateway Page
You might be getting the error due to the reachability problem from the Netscaler to the Storefront server, So, in this case, accessing the unified gateway page and adding the storefront server as a service works for you. Follow the instructions to do so: And check if the http/1.1 service unavailable error has been fixed, but if not then follow the next solution.
Check your Internet Connection
Most of the time the service unavailable error appears because of a poor or a bad internet connection. Just check whether your internet has proper bandwidth. Sometimes internet speed varies from area to area and it may have gone temporarily down. So, contact the internet service provider or you can also try troubleshooting the internet. Follow the instructions given to follow the steps:
Check your Device Date & Time
If your device date and time is set wrong then this can be a culprit that causes the error. You just need to change the date and time of your system. Follow the steps mentioned to reset the date and time: After this whole process has been completed it is estimated the error is resolved but if not then head to the next potential fix.
Clear the SSL State
As some users have reported that clearing the SSL state in the internet properties worked for them to fix HTTP.1.1 Service Unavailable error. There is a possibility that your SSL state gets corrupted and causes an SSL connection error or conflicts when sending a request to the server and clearing it may work in your case. Follow the instructions to do so:
Reset to the Original Settings
If you have done any modification in the original settings of your internet options then this might be a reason why you are unable to visit the website and get the error message on your screen. So, try to reset to the original settings. Follow the steps to do so:
Clear Cache and Temporary Files
Sometimes cache and temporary files get corrupted and lead to various errors. So, there is a possibility clearing all the cache files and temporary files fix the HTTP status code. Here follow the instructions to clear the cache on the Chrome browsers: Hope the error on the Chrome browser is fixed. Well, these are the steps for the Google Chrome browser and if you are using different browsers like Firefox or Edge then make sure to clear cache and temporary data on your Windows browsers as this may work for you.
Update Your Browser
Whenever you get a new update for an application, and you are still on its old version, new features won’t support and more importantly these old versions will start giving errors with some websites. So, check for the latest update available on your browsers and install it. Follow the instruction given:
Disable Windows Add-Ons
Another possible reason responsible for this server unavailable error is because some Add-Ons have been enabled by Windows on the internet connection. And these add-ons might be preventing the website from sending requesting and reloading. Also disabling the add-ons worked for many users to get past the error. So, follow the steps given to do so:
Scan for Malware
If your system is infected with a virus or malware infection then this might prevent you from visiting the particular website and as a result, you see the error message on your screen. So, if you are using a third-party antivirus program then perform a deep scan to remove the virus or malware infection. Moreover, you can also scan your Windows 10 system with the inbuilt Windows defender tool. Here follow the steps to run the tool manually. Once the scanning process is finished restart your system and revisit the web page to see if the error persists or is fixed or follow the next possible fix.
Use a Proxy Server
In this method, it is suggested to unblock the proxy server in your PC internet connection LAN settings. Using the proxy server might solve reachability issues and you can access the Unified Gateway logon page. Follow the given below instructions to do so: After completing the process click on the OK button to close all the tabs. Now check the error message still exists or not.
Clear DNS Cache
Many a time due to an issue in DNS of client-side, http/1.1 service unavailable error may come up. In these scenarios, the local DNS cache memory needs to be cleared first. After this IP address of your, Windows needs to be released and relaunched. So, follow the below steps to clear DNS.
Change the DNS Server
If you still encounter the error then you can change the DNS server address. Sometimes the DNS configured on your PC is not owned by Google, which takes a long time to load the page and can cause errors. Here are the following step by step instructions to change the DNS server:
Allow Exception to the Windows Firewall
There is a possibility that your Windows Firewall is blocking the connection and due to this you are unable to access a particular website or block the request. And it is not uncommon for the Firewall to block access to the internet. So, add your browsers to the whitelist to prevent seeing the error. Follow the steps to allow Firewall on your browser: After doing these, just go to the main web page and check whether the HTTP 1.1 not available error has got resolved.
Perform the Disk Cleanup
Well, this fix is less applicable, but in some cases, it is seen if you are running low on space then this can cause errors. So, check your system space and if you are running low on disk space on your system then this might be causing issues when loading a webpage. So, try clearing the temporary internet files by performing disk cleanup. If this is applicable in your case then follow the instructions to do so: So, it is estimated the above-listed solutions work for you to solve the http/1.1 service unavailable on your Windows system.
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