Avast HTTP Server Returned Error [Fixed]

With common virus attacks and spyware upgrades, it is important to keep pace with the security software. Updating the Avast security application keeps your computer safe and guards it against spyware and malware infections or viruses. 

However, the update process is not smooth enough and users can face the Avast HTTP server returned error. The HTTP server returned error occurs when there is a problem while connecting to the server. This problem causes the device to freeze and perform slowly. 

This is an update error and can be caused due to malware infection. This error generally occurs if certain files are corrupted or missing. Sometimes, if the Windows firewall is turned on, then also you can come across this problem on your system. 

If you are facing the same problem then you are in the right place. Here, in this article, you will get to learn all the possible fixes to get rid of this problem quickly.

Amazing Hacks to Solve Avast HTTP Server Returned Error 

Luckily, there are a number of fixes available to eliminate this problem from your device. Here, we are going to discuss them and elaborate each of them in a step by step manner.

Fix 1 – Repair the Avast Security Software

The Avast HTTP server returned error is at times caused by a corrupted installation file. The best way to fix this problem is to repair this application. Follow the steps given below to complete the repair process of Avast software.

1. Firstly, launch the Control Panel window.
2. In the Control Panel window, select the Programs and Features section. 
3. From the Programs and Features window, find Avast antivirus and select it. After that, click on the Repair button. This process will take a few minutes to finish. 
4. Once the repair process is finished, reboot your PC and then check whether the error has been fixed or not. 

Fix 2 –  Reinstall Avast Antivirus

If the Avast antivirus application is corrupted, then you may get this error on the system. If such is the case, you need to simply uninstall the Avast antivirus application and then reinstall it. Follow these directions:

1. First of all, click on the Start button and select the Settings option. 
2. From the Settings window, double-click on the Apps section and then select the Apps & Features tab.
3. In that tab, scroll down the page until you find the Avast antivirus application, select it. After that, click on the Uninstall button. 
4. Once the removing process is done, install it properly. So, visit the official website of Avast antivirus and look for the latest version of Avast antivirus application. 
5. Download it and then install it correctly. After installing it, restart the system and then check if the error message still shows or not. 

Fix 3 – Install the Latest Version of the Operating System

An outdated version of the Operating System can result in this problem on the device. So, you need to keep the system up to date. Here are some of the techniques that you can follow:

1. Hold down the Windows Home key and press the I button to launch the Settings window. 
2. From the Settings window, navigate to the Update & Security section and select the Update tab on the left panel.
3. On the Update tab, click on the Check for updates button to find whether any updates are available or not. 
4. If you find the updates, then click on the Update button to start the update process. Once the process is completed, the system will automatically restart. 

Now, try to update the Avast security software. 

Fix 4 – Check the Internet Connection

Due to a poor internet connection, you may fail to update the Avast application and get the HTTP server returned error message on the screen. So, you need to check if the internet connection is working correctly or not. 

If you are using a WiFi then restart the router. After restarting the router, check if the problem still appears or not. 

If you are using the Ethernet cable then check whether the cable is damaged or not. If yes, then use another Ethernet cable and fix this problem. 

Fix 5 – Turn Off the Windows Firewall 

Sometimes, the Windows firewall can prevent you from updating the Avast antivirus application. So, you can try disabling it to fix this issue. To do that, follow the undermentioned steps:

1. Press the Start button and select Control Panel.
2. When the Control Panel window opens, select the Windows Firewall section.
3. Click on the Turn Windows Firewall on and Off button on the left panel from the Windows Firewall window.
4. On the right window, tick on the Turn off Windows Firewall option from Public Network Settings and Private Network Settings sections. 
5. After performing these steps, click on the OK button to save the changes. 

Fix 6 –  Clear the Cookies, Cache Data, and Browsing History

If you do not remove the Cookies, Cache Data, and Browsing History from time to time, then you may encounter the HTTP server returned error message on the Avast security software. So, you have to clear them from the browser as soon as possible. 

Google Chrome

If you are using the Google Chrome application then follow the steps cited below:

1. Open the Google Chrome application.
2. In the Google Chrome window, go to the Menu section and select the Settings button from that list.
3. From the Settings window, scroll down the page and select the Advanced tab.
4. When the Advanced tab opens, navigate to the Privacy tab and select the Clear Browsing data option.
5. After that, set the time range that you want and then mark on the Cache Data, cookies Data, and Browsing Data. then click on the Clear Data button to clear them. 

Next, again go to the Browsing Data window and select the Advanced tab. In that tab, select all the items and then hit the Clear Data option. Once you are done with these steps, reboot the machine. 

Mozilla Firefox

If you have Mozilla Firefox application then try to follow these steps to resolve the Avast HTTP server returned error :

1. First of all, launch the Mozilla Firefox application.
2. From the Mozilla Firefox window, go to the Menu list and select the Options button.
3. In the Options window, go to the Privacy tab and select the Clear your recent history button.
4. From the next window, set the Time range to clear to ‘Everything’ and then click on the Clear Now button to remove them. 
5. Next, open the Advanced section and go to the Network tab. From that tab, scroll down the page and locate the Cached Web Content and then click on the Clear Now option. 
6. Restart the computer and then try to update the Avast software and check if the problem gets resolved or not. 

Fix 7 – Run the System File Checker Tool

When you get this problem on the system, you need to run a full scan of your PC. Running the System File Checker (SFC) tool sometimes help in fixing this error. If you do not know how you can run this tool, then follow the directions below.

1. Launch the Command Prompt window.
2. Type SFC/scannow and then press the Enter button to run this command.
3. Once the scanning process is done, check if the problem is still there or not.  

The above steps will work to resolve the Avast HTTP server returned error on the system. Read the article and perform the steps one-by-one on your PC to solve this issue quickly and completely.