How To Fix Norton error 8506 421 Call +1 2176364745

Norton antivirus is the robust software that secures your device from emerging threats created by hackers. It protects your valuable data from viruses, malware, Trojans, rootkits and ransomware attacks. It is very simple to install but some users encounter Norton Error 8506 421. In this blog, you are going to read the solution of Norton Error Code 8506 and 421.

Symptoms of Norton Error 8506 421:

The symptoms of Norton Error Code 8506 & 421 are when active program window crashes, other software programs might have crashed your system with error 421, windows speed is decreased and works slowly, and often the computer hangs.

Reasons behind Norton antivirus Error Code 8506 and 421:

The reasons for the Norton Error Code 8506 and 421 are corrupted windows registry entries, partial or corrupt installation of Norton antivirus, virus or malware attack affected Windows system files, and other software programs accidentally deleted Norton antivirus connected files.

Solution To Fix Norton Error Code 8506 421:

1: Fix the Registry Entries:

Open the Start menu and then enter “command prompt” in the search bar.

In the search result, when you find the ‘Command Prompt’ option, simply right-click on it.

Then, choose the ‘Run as administrator’ option from the list.

Subsequently, enter “regedit” in the command line and then click Enter key.

Now, choose the portion that you want to back up from the ‘Registry Editor’ window.

Now go to the File tab and choose the ‘Export option from the list.

From the ‘Save in’ option, choose the folder where you want to save the backup file of the Norton antivirus.

Simply change the name of the file to ‘Norton 360 backup’.

Subsequently, click on the ‘Selected Branch’ option from the ‘Export Range’ pop-up box.

Click on the Save button to save the ‘.reg’ file extension.

Here the backup of the registry file is effectively created.

Then, edit the registries to fix them.

For this, find the key that you want to edit.

Now, press the F and Ctrl key simultaneously to open the Find dialog box.

Here, simply type the name of the key and click on the ‘Find Next’ button.

You must click twice on the key that you want in the list.

Then, edit the value data of the key.

Finally, click the OK option to apply the changes and then restart your device.

2: Remove the Junk files:

Open the Start menu and then visit the ‘Computer’ section.

Then, right-click on the main hard drives i.e. C: drive.

Simply choose the ‘Properties’ option from the list.

Subsequently, click on the ‘Disk Cleanup’ option.

In the next Window, there is a list of a few items.

Simply choose all the items and then right-click on them.

Here, choose the ‘Remove’ option from the list.

In case, you want to clear more junk files, simply click on the ‘Clear up system files’ option.

Then, choose the categories that you want to delete and click the OK button.

Then, click on the ‘Delete Files’ option to complete the process.

3: Update the Video Graphics Driver:

Visit the Start menu and then enter “device manager” in the search bar, press Enter key.

Then, click on the ‘Display adapters’ option to expand it.

Subsequently, simply right-click on the ‘HD graphics card’ and choose the ‘Properties’ option from the list.

Here simply go to the Drivers tab just to examine for the available updates.

If there are latest updates available, simply install it.

When you update it, simply restart the system.

4: Reinstall the Norton Antivirus:

Open the website of Norton and then download the ‘Norton Remove and Reinstall’ tool.

Subsequently, simply save the file on the Windows desktop or sometimes the file is stored automatically to its default location.

Now, press J and Ctrl key simultaneously to open the Download window of the browser.

Now, click twice on the NRnR icon.

Carefully read the license agreement and click on the Agree button.

Then, click on the ‘Remove & Reinstall’ option.

Subsequently, verify it by clicking on the Continue button.

Finally, click on the ‘Restart Now’ option to apply the changes.

The above mentioned solutions are quite easy to resolve Norton Error 8506 421. In case of any trouble, simply consult Norton professionals available at onlinelive.support for quick assistance.