Having problems with Mozilla?

File a complaint and get it resolved. It’s quick, effective and absolutely free!
Proudly resolving consumer concerns since 2004

Mozilla Customer Service Contacts

331 E. Evelyn Avenue
Mountain View, California
United States - 94041
United States

Portland, OR
Brewery Block 2, 1120 NW Couch St, Suite 320, Portland, OR 97209

San Francisco, CA
2 Harrison Street, Suite 175, San Francisco, CA 94105

Canada


Toronto, ON
366 Adelaide St W, Suite 500, Toronto, ON M5V 1R9, Canada

Vancouver, BC
163 W Hastings St, Suite 209, Vancouver, BC V6B 1H5, Canada

United Kingdom
101 St Martin‘s Lane, 3rd Floor, London WC2N 4AZ, UK

New Zealand
Level 7, 5 Short St, Newmarket, Auckland 1023, New Zealand

France
16 Bis Boulevard Montmartre, Paris 75009, France

Germany
Haus 10, Treppe 6, Voltastr. 5, 13355 Berlin, Germany

China
International Club Office Tower 800A, 21 Jian Guo Men Wai Avenue, Chaoyang District, Beijing 100020, China

Japan
7-5-6 Roppongi, Minato-ku, 
Tokyo 106-0032, Japan

Taiwan
4F-A1, № 106, Sec. 5, Xinyi Rd, Xinyi Dist., Taipei City 11047, Taiwan

ComplaintsBoard.com is not affiliated, associated, authorized, endorsed by, or in any way officially connected with Mozilla Customer Service. Initial Mozilla complaints should be directed to their team directly. You can find contact details for Mozilla above.

ComplaintsBoard.com is an independent complaint resolution platform that has been successfully voicing consumer concerns since 2004. We are doing work that matters - connecting customers with businesses around the world and help them resolve issues and be heard.

Use this comments board to leave complaints and reviews about Mozilla. Discuss the issues you have had with Mozilla and work with their customer service team to find a resolution.

Mozilla Complaints & Reviews

MozillaFirefox

One of the latest updates to my browser Firefox included a rectangular area in the top left corner of the screen that display the VOLUME CHANGE when one clicks to increase or decrease THE volume. It lasts for a few seconds and blocks the data that is underneath.

For users of Excel and Photoshop, it blocks essential links on the header and is entirely FRUSTRATING that one's work is delayed by an unnecessary indicator.

PLEASE REMOVE THIS VOLUME INDICATOR.

Add your opinion

    By clicking Submit you are agreeing to the Complaints Board’s Terms and Conditions

    MozillaFirefox Censure of Conservatives

    For over 20 years, I have used Mozilla products such as Firefox and Thunderbird among others. I used them daily, but can no longer.

    I just read that Firefox (Mozilla) will censure conservatives; how, I can only imagine. Censuring anyone's point of view is dangerous and un-American. Germany did this in the 30's and Russia, China and North Korea do it today. Add Firefox (Mozilla) to this list.

    Today, I have totally deleted all Mozilla software from all of my computers and have found some great alternatives to replace them. I cannot in good conscience continuing supporting you while you limit access to the conservatism.

    Firefox Censure of Conservatives

    Add your opinion

      By clicking Submit you are agreeing to the Complaints Board’s Terms and Conditions

      Oct 23, 2020

      Mozilla — Firefox browser?

      I have always liked Firefox as it seemed easier to use. However, I recently had a very annoying experience. I...

      MozillaMozilla firefox 79 browser

      Browsing speed is very slow and keep showing notification that one web site is slowing browser speed and provide option for wait and stop it. I have tried both option but problem still remaining. Same notification keep coming on the top of the browser. This happen each time I open new website. I even uninstall and again reinstall browser but same problem is occur-ed again and again? Please solve this problem as soon as possible. I use firefox as a option of chrome.

      Add your opinion

        By clicking Submit you are agreeing to the Complaints Board’s Terms and Conditions

        MozillaFirefox is a piece of crap!

        I have a new hp computer. I have firefox and it is a piece of [censored]! At least 5-6 times a day it shuts down. Just shuts down. Freezes! Piece of [censored]! On tuesday evenings i'm on youtube, streaming live the mollie b polka program. Three [censored]ing weeks in a row the chat shut down! Not on my husbands computer, which i'm am now am forced to use because of this piece of [censored]!
        A multi-million dollar company and you can't get anything correct!

        Christine Sandness

        Add your opinion

          By clicking Submit you are agreeing to the Complaints Board’s Terms and Conditions

          We are here to help

          • 16 years' experience in successful complaint resolution
          • Each complaint is handled individually by highly qualified experts
          • Honest and unbiased reviews
          • Last but not least, all our services are absolutely free

          MozillaUsing your browser

          On numerous occasions I have tried to access the Georgina Historical Society website both on Firefox which redirects to Yahoo and on Internet Explorer which redirects to Bing with the same result; all I get is sites related to Georgia instead of Georgina... your spelling algorithm is off. It DOES work properly in Google Chrome but not everyone uses that browser meaning that our website is unavailable to non-google users. What gives??? why??? What can you do to help us??? Otherwise we will have to advise our membership to stop using all browsers except those developed by Google. Personally Firefox has been my go to browser for many years, but I will have to make a change if it will not support our website. I must say that both Yahoo and Bing have a decidedly American bias in their searches. I live in Canada... my feeling is if you want to do business with us up here, we need to be better accommodated.

          Add your opinion

            By clicking Submit you are agreeing to the Complaints Board’s Terms and Conditions

            Mozilla CorporationBrowser

            Since last update from mozilla, its always logging me out of my firefox account and bringing up an old firefox account instead, which has not been used on this pc or other devices with firefox account and have removed old one many times from your list but after a couple of days its back - how is this possible when I have never used old details on here or login on any device. Please resolve this issue as I do recommend your browser to many ppl and at the moment too many ppl are reverting to chrome etc due to this issue.

            Add your opinion

              By clicking Submit you are agreeing to the Complaints Board’s Terms and Conditions

              Firefoxcomes up but cannot go to any site, my other browsers work just fine

              I shut down at night, when I started up again the next morning, the browser came on, but it did not load my favorites and did not allow me to engage anything on the web. It has not worked since the morning of 2/12/20.
              My other browsers work just fine, only yours does not work, why is this?
              This makes things difficult as I have several things that run off this account that I cannot now access, or at least without difficulty. Did your whole site go down? When can I expect it to be back up?
              I do enjoy using your browser, and it has never failed me before, I do hope you can get it up and running very soon.
              Terry Wilson

              Add your opinion

                By clicking Submit you are agreeing to the Complaints Board’s Terms and Conditions

                Firefoxbrowser

                Two days ago So i was about to shut down my pc when I got a fire fox browser update and i decided to let it update and as it was about to finish my video card stopped working and it got fried. I am assuming this happen because to its hardware acceleration thing you wanted to enable. But cost me my graphic card . It was a cheap one but still i am now with one and cant play any games on my pc.
                Why did u guys have force this.
                i want repairs or a new card.

                Add your opinion

                  By clicking Submit you are agreeing to the Complaints Board’s Terms and Conditions

                  Mozilla CorporationFirefox 70.xxxx

                  Started about 11/20/2019 give or take a day or two.

                  Ever since Win 10 made its latest update to 1903 ( I delayed it on win 10 pro), Firefox is SLOOOOOOOOOOW. So slow its almost unusable.

                  Actually, I'm not sure if its a win 10 update or an update to Firefox 70.0.1.0.

                  I have over 600 tabs so I have been deleting tabs to no effect.

                  I also stopped all extensions and went into safe mode - to no effect.

                  Add your opinion

                    By clicking Submit you are agreeing to the Complaints Board’s Terms and Conditions

                    Mozilla Corporationfirefox

                    I have been using Firefox on two generations each of a desktop and a laptop with great satisfaction and convinced my three daughters to use it as well.

                    However, when I tried to start up on my desktop yesterday I was greeted with the message COULDN'T LOAD XPCOM. I retried a number of times, and discovered that when I clicked on a link in various emails I received I got the same message.

                    My laptop is strill working as usual with Firefox.

                    If I cannot upload XPCOM should I uninstall Firefix and re-download it? I fear that by doing that I will lose all my bookmarks. Is that so?

                    I'd be grateful for advice soon.

                    Many thanks

                    Peter Tallentire

                    Add your opinion

                      By clicking Submit you are agreeing to the Complaints Board’s Terms and Conditions

                      Mozilla Corporationfirefox

                      Had all my bookmarks, headers laid out the way I had them for years!!!
                      The p.O. S. Update ruined everything!
                      Unable to recover..
                      Sucks, sucks, sucks!!!
                      Used firefox forever!
                      Noe time to change to group that doesn't "f" things up!!

                      Add your opinion

                        By clicking Submit you are agreeing to the Complaints Board’s Terms and Conditions

                        Mozilla Corporationdownload chrome

                        Netflix wont run and tells me to use another browser. Comcast can't load chrome. I cant load chrome and it will not load from Firefox??? what to do I am very un happy. please contact me at [protected]@comcast.com. Ifi cant load chrome and watch Netflix I stop using you please advise I really want to watch Netflix. Has this company been sold because it not user friendly right now and its very disappointing

                        Add your opinion

                          By clicking Submit you are agreeing to the Complaints Board’s Terms and Conditions

                          Mozilla Corporationnew firefox browser

                          I am on a Mac and the browser just updated itself and now I have lost all my bookmarks collected over many year. Obviously I'm panicking. I have tried to follow directions but nothing is happening. Please give a step to step guide. I have a backup on another drive. Really unhappy. I tried to reinstall my old browser and it was ok last night. Today when I started it up it had reverted to the new browser DESPITE the fact i instructed it not to do automatic updates.

                          Add your opinion

                            By clicking Submit you are agreeing to the Complaints Board’s Terms and Conditions

                            Mozilla Corporationpapgamez.com

                            I looked at this site as it claimed to deliver all favorite movies & games for free on minimum fees. I started filling out some of my bank details but then just had a feeling that it wasn't a legitimate site so didn't consent or submit anything just got out of that internet page.
                            Just this morning I checked my bank app & Papgamez has debited $72 out of my account. I went to the bank immediately. They couldn't help & said if I filled even the slightest details that the onus of fault was mine! And to try to call or email. What part of fraudulent scam did they not understand? There is no email or phone number I can call. Even if there was it will only alert the scanners I am on to them. They would wipe my bank account clean. I have taken all my money out of the account. I will also closing the whole account down.
                            Just so frustrating as the culprits won't be held accountable. And it's the money loss plus the inconvenience of changing all the details linked to that bank account. As in other household bills that are debited from that account.
                            YES - Papgamez is 100% A SCAM

                            Add your opinion

                              By clicking Submit you are agreeing to the Complaints Board’s Terms and Conditions

                              Mozilla Corporationfirefox browser

                              When posting news articles to social media, I have an open tab for minds. com. Almost every day, when I have copied the web address of an article, and click on the media tab to post, suddenly the page jumps, and I now have two pages open. One with a single tab, which I just clicked on, and the original page with multiple tabs. This started with 66.

                              Add your opinion

                                By clicking Submit you are agreeing to the Complaints Board’s Terms and Conditions

                                Mozilla Corporationadd on services of mozilla

                                This complaint is for Mozilla Firefox's Addon: The User Switcher.

                                There is a fake one that duplicates the authentic User Switcher: https://addons.mozilla.org/en-US/firefox/addon/user-agent-switcher-revived/.

                                The REAL one is this: https://addons.mozilla.org/en-US/firefox/addon/uaswitcher/

                                The fake one uses a different icon, and the platform uses icons instead of the text lists that are found in the authentic User Switcher.

                                Please look into this.

                                add on services of mozilla

                                Add your opinion

                                  By clicking Submit you are agreeing to the Complaints Board’s Terms and Conditions

                                  Mozilla Corporationfirefox auto updates

                                  I recently was forced to update Firefox, after it was done it completely wiped out everything i have saved on search engines and web sites. My computer has become unstable and will require a reload to fix the problem! My computer is cycling between a black screen and returning back to Firefox at least 10 times per minute! Do you test your updates! Do you have a QA department? Your update f___ up my computer! IDIOTS!

                                  Add your opinion

                                    By clicking Submit you are agreeing to the Complaints Board’s Terms and Conditions

                                    Mozilla Corporationfirefox app ver. 17.3 (15323)

                                    You cannot clear out the Web Data that lists every Web site that you went to separately. Make that possible again and fix your Java. Please, hire some better people. You tap the red minus area and the entry will not delete. You have to fix that because even trying to force mobile browsing app tracking should be not allowed. That's crazy. That is the only way to get rid of cookies using that app on your phone. Just take care of it.

                                    Add your opinion

                                      By clicking Submit you are agreeing to the Complaints Board’s Terms and Conditions

                                      • Updated by Rob Sellmansberger · Jun 22, 2019

                                        The Website Data is located within Data Management. You have to select Clear All instead of any one listing. You cannot treat phone customers that way about where people touch their glass screens. Thanks

                                      Mozilla Corporationfirefox

                                      Why does firefox use trackers on there clients? they profess to be a neutral non tracking non data mining company yet using their program tracks your usage and location worse than or as bad as any other internet browser. They are liars they use some of the nastiest most dangerous trackers available to track their clients on the net. I have tested firefox trackers with 6 different spy/ malware programs and everyone has found nasty trackers used by firefox/ mozilla. They use a geo tracker which comes up as extremely dangerous by all 6 spy/ malware programs I have used.
                                      Please be aware this company lies to it clients.

                                      Add your opinion

                                        By clicking Submit you are agreeing to the Complaints Board’s Terms and Conditions

                                        IN THE NEWS

                                        Unhappy consumers gather online at Complaintsboard.com and have already logged thousands of complaints.
                                        If you see dozens of complaints about a certain company on ComplaintsBoard, walk away.
                                        One of the largest consumer sites online. Posting here your concerns means good exposure for your issues.
                                        A consumer site aimed at exposing unethical companies and business practices.
                                        ComplaintsBoard is a good source for product and company gripes from especially dissatisfied people.
                                        You'll definitely get some directions on how customer service can best solve your problem.
                                        Do a little research on the seller. Visit consumer complaint websites like ComplaintsBoard.