Site works for me. see screenshot What security software are you running? Did you try with Firefox in Safe Mode?

Didn't fix the problem. Running Windows Security and Malwarebytes Premium. And "SAFE MODE" is now called "Troubleshoot Mode". Its weird that all the other websites I visit don't have this problem, just www.microcenter.com

Thanks for trying!!!

If you're running Windows Pro try this. https://www.howtogeek.com/399290/how-to-use-windows-10s-new-sandbox-to-safely-test-apps/

If not pro, disable malwarebytes, reboot, and try again.

Clear all items for a single site https://support.mozilla.org/en-US/kb/remove-websites-address-bar-suggestions

Refresh Firefox. https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings

"You don't have permission to access..." errors are characteristic of a firewall that protects the server against misuse and this firewall thinks something is suspicious about the HTTP request. If you use a proxy or VPN, try to use a direct connection. Select "No Proxy" if "Use the system proxy settings" or one of the others do not work properly.

• Settings -> General -> Network -> Connection -> Settings

You can try to clear the Cache and remove the Cookies for websites that cause problems via the padlock button or via "3-bar" Firefox menu button (Settings) to see if that fixes it.

• https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can

I've seen cases where having enabled Resist Fingerprinting was causing this issue.

• https://support.mozilla.org/en-US/kb/firefox-protection-against-fingerprinting

Start Firefox in Troubleshoot Mode to check if an extension is causing the problem.

• https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode

If this all doesn't work, try "Forget About This Site" in the right-click context menu of an history item. Note that this might remove saved passwords for this website, so make a note if you have any.

• https://support.mozilla.org/en-US/kb/delete-browsing-search-download-history-firefox