1. In Internet Explorer, click on Tools and Internet Options. 2. Click on the Advanced tab, then scroll down to the Security section under Settings. 3. Check the Enable DOM Storage box and click on OK. 4. To Disable DOM Storage, just uncheck the Enable DOM Storage box and click on OK. Enable or Disable DOM Storage in Mozilla Firefox 1. Open Firefox 2. Type in about:config in the address bar and hit enter. 3. Click on the I’ll be careful, I promise button. 4.