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negotiate-auth. allow-insecure-ntlm-v1”’ and select ”’Toggle”’. Then close Firefox and restart. See if you can access that SharePoint website without getting that 401 message.
How do I make sure Firefox is permitted to access the web on Mac?
Allowing specific applications
- Open System Preferences.
- Click the Security or Security & Privacy icon.
- Select the Firewall tab.
- Click the lock icon in the preference pane, then enter an administrator name and password.
- Click the Firewall Options button.
- Click the Add Application (+) button.
In general, most SharePoint Online features are supported in the latest versions of Internet Explorer, Edge, Chrome, Firefox and Safari.
Why is Firefox not working on my Mac?
Try closing Firefox and then reopen it. If Firefox is unresponsive, then try to force close it. Press “Option”, “Command”, and “Esc (Escape)” together (or select the Force Quit option from the Apple menu) and select Firefox and then click Force Quit. And then reopen Firefox and test your problem.
How can I tell if Firefox is accessing the Internet?
On the left side of the Windows Firewall panel, click Allow a program or feature through Windows Firewall. The Windows Firewall Settings window will appear. Find Mozilla Firefox (or firefox.exe) in the list of programs. If it is there, click to select it.
Why did Firefox stop working?
This error is caused by a problem with Firefox program files. The solution is to remove the Firefox program and then reinstall Firefox. (This will not remove your passwords, bookmarks or other user data and settings which are stored in a separate profiles folder.) Uninstall Firefox.
How do I unfreeze my Firefox browser?
Firefox hangs at random times
- Open your profile folder: Click the menu button , click Help and select More Troubleshooting Information.
- Click the Firefox menu and select Exit.
- In the Firefox profile folder, find and rename the files places.
- Finally, reopen Firefox.