You can encounter the 403 forbidden error on Mozilla firefox while opening your desired site. This issue is also worded as 403 forbidden, HTTP 403, error 403, error 403-forbidden, HTTP error 403 forbidden. We have some recommendations and solutions that can help you to get out from this 403 forbidden error on Mozilla firefox and get smooth service. Still, at first, we recommend you scanning your machine with antivirus software so that you never get any error on your Mozilla Firefox browser. You can always mozilla firefox customer support number if the issue reoccurs.

Also read: How to recover Mozilla Firefox to default settings without uninstalling

Solution 1: Clear cookies and caches.
The cache is the tummy of all web addresses, so the web page you visited previously has dropped its content like images, HTML, etc. in the belly (Cache). Next time when you revisited, it may create a loading problem because of caches, so it is essential to fix this 403 forbidden error by clearing your cookies and caches.

You can use the following steps to make it done on Mozilla Firefox :
1. Click on the Mozilla Firefox menu and then you have to select options.
2. Now you have to go to privacy and security.
3. You see the option of cookies and site data on the page.
4. Then click on clear data.
5. A pop up will appear, tick on cookies, and cached web content on it.
6. In the end, just press clear and your service gets restarted.

Solution 2: Check the URL address
The most known reason for getting 403 forbidden error on Mozilla Firefox is that users do not put the correct URL for the web page. For instance, the spelling of the web page file name and its extension should be correct as you cannot use a dictionary or spelling checker while typing a web address on the search box. So it is better to check the web address correctly so that you can enjoy the webpage service error-free.

Solution 3: Refresh the web page
Mostly 403 forbidden error is not permanent on the web page. It may occur at the moment but get rid of after some minutes. So the easiest way to check and clear the issue is to refresh the site one or two times. You can also press F5 if refreshing the site doesn't work.

If you are still getting HTTP 403 error, then you can also try the below things.
1. The another simplest way is trying again later.
2. You can also contact the administrator of the website.
3. Contacting your ISP can also help in resolving your issue.

Also read: How to Fix Mozilla Firefox Keeps Asking for the Master Password

Your server thoroughly knows what you want to do, and it just won't let you do it because you don't have the proper permissions for some reason. Some common reasons for getting this error on Mozilla firefox can be that you try to download the most recent windows update, but they are also provided with the HTTP status forbidden error code. You can get help by contacting mozilla firefox customer care and solve this issue instantly.

Source URL: How to fix 403 forbidden error in Mozilla Firefox