Steps to Fix Norton Antivirus Installation Error 8506?

Norton users often complain that they have several issues with the Norton Antivirus program and it creates several errors on their computer system. Norton Antivirus program is associated with a number of errors and issues. The issues and errors can be resolved by going through some of the simple procedure which we have listed on our blog. Not just the fixing process but we have listed the main symptoms and causes of Norton Installation Error 8506.

SYMPTOMS OF ERROR 8506 21

• “Error 8506 21” appears and crashes the active program window.
• Windows runs sluggishly and responds slowly to mouse or keyboard input.
• Your computer periodically “freezes” for a few seconds at a time.
• Your PC frequently crashes with Error 8506 21 when running the same program.
• “Norton Error 8506 21” is displayed.

Some of  the common 8506 21 error messages can appear during program installation, while a Symantec-related software program (eg. Norton AntiVirus) is running. It usually appears during the Windows startup or shutdown. It can even occur during the installation of the Windows operating system.

CAUSES OF ERROR 8506 21

• Corrupt download or incomplete installation of Norton AntiVirus software.
• Virus or malware infection that has corrupted Windows system files or Norton AntiVirus-related program files.
• Corruption in Windows registry from a recent Norton AntiVirus-related software change (install or uninstall).
• Another program maliciously or mistakenly deleted Norton AntiVirus-related files.

SOLUTION 1. REPAIR REGISTRY ENTRIES ASSOCIATED WITH ERROR 8506 21

1. Click the Start button.
2. Type “command” in the search box… DO NOT hit ENTER yet!
3. While holding CTRL-Shift on your keyboard, hit ENTER.
4. You will be prompted with a permission dialog box.
5. Click Yes.
6. A black box will open with a blinking cursor.
7. Type “regedit” and hit ENTER.
8. In the Registry Editor, select the Error 8506 21-related key (eg. Norton AntiVirus) you want to back up.
9. From the File menu, choose Export.
10. In the Save In list, select the folder where you want to save the Norton AntiVirus backup key.
11. In the File Name box, type a name for your backup file, such as “Norton AntiVirus Backup”.
12. In the Export Range box, be sure that “Selected branch” is selected.
13. Click Save.
14. The file is then saved with a .reg file extension.
15. You now have a backup of your Norton AntiVirus-related registry entry.

SOLUTION 2. UTILIZE WINDOWS SYSTEM RESTORE TO “UNDO” RECENT SYSTEM CHANGES

With the Windows System restore, you can resolve this error. To use System Restore (Windows XP, Vista, 7, 8, and 10):

• Click the Start button.
• In the search box, type “System Restore” and hit ENTER.
• In the results, click System Restore.
• Enter any administrator passwords (if prompted).
• Follow the steps in the Wizard to choose a restore point.
• Restore your computer.

By following any of these two methods, one can fix the Norton Antivirus Installation Error 8506. There are a number of common Norton Errors that can be fixed by following the same method. If you have just purchased any of the Norton product and you want to install it, then you can visit the Norton.com/setup or Norton.com/myaccount.

Source – https://notron-setup.com/steps-to-fix-norton-antivirus-installation-error-8506/