Netflix Error S7020

If you experience the error code S7020 in the Safari browser on your Mac, often accompanied by the following message

Whoops, something went wrong...Multiple Netflix tabs

It typically points to information stored on your device that needs to be refreshed, or to the use of private browsing. Follow the troubleshooting steps below to resolve the issue.

Restart your browser

Quit your browser.
Reopen your browser.
Try Netflix again.

Turn off Private Browsing

In the menu bar, select Safari.
Select Preferences.
In the General tab, under Safari opens with:, select A new window.
Close the Preferences window to save your new setting.
In the menu bar, select Safari.
Select Quit Safari.
Open Safari and try Netflix again.

Clear your browser cache

Safari Version 10 or later

In the menu bar, select Safari.
Select Preferences.
Select the Privacy tab.
Select the Manage Website Data... button.
Select Remove All.
Select Remove Now.
Select Done.

Safari Version 9 or earlier

In the menu bar, select Safari.
Select Reset Safari and uncheck everything except Remove all website data.
Select Reset.

Clear Safari browsing history

From the menu bar in Safari, select History.
Select Clear History...
From the drop-down menu, select All History.
Select Clear History to confirm.
Try Netflix again.