Should I uninstall previous versions of Firefox?

Should I uninstall previous versions of Firefox? I found 4 versions of Firefox in my control panel/programs & features. The latest version is 5.0.

Quite honestly, unless you installed Firefox into a different Program Files folder yourself every time you installed a new version of Firefox, I doubt if those older versions are still installed. Don't '''Remove''' anything until you can verify that the older versions are in fact still there, by "touring" the Program Files set of folder thru the Windows Explorer file interface ''(not to be confused with the Internet Explorer web browser)''.
When Firefox is updated, it installs the new version in the folder where the old version was. And, the Firefox installer uses the same folder all the time, except for the 4.0 beta versions and when the user does a '''"Custom"''' installation & selects a different folder than normal for Firefox.

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Should I uninstall previous versions of JRE???

I have these previous version of JRE installed:
J2RE, SE 1.4.1_02
J2RE, SE 1.4.1_07
J2RE, SE 1.4.2_05
I am now updating to J2RE, SE 1.4.2_06 should I uninstall previous versions of JRE or should I leave it alone?
If I were to uninstall do I uninstall via Control Panel or is there another way to uninstall JRE?

There is little harm in either having multiple version (except disk psace/clutter) or removing them. If it turns out you have software that will not work with the latest version, you can always re-install an older version.

After installing latest Updater should I uninstall previous version?

Hi,
I have just installed Updater IPod 2006-01-10. Should I now delete/uninstall the folder that has the previous version of Updater in it? I think I know the answer but would like some reassurance before I delete anything!
Thanks,
Barry Brotherton

Once you have installed the software on your iPod it isn't necessary to keep the updater installer stored on your computer.
However, wise heads around these parts keep at least one version that is known to work in case any newer version you may install on the iPod in the future contains bugs and causes problems. Read some of the posts on this and other iPod forums to see how some folks have wished they'd never updated the software on their iPods but can't roll back a version because they've deleted any others they may have had stored on their computer.
Apple don't keep older software updaters available for download, and they are very often difficult to find online. If you are worried about them taking up storage space, why not save them to a CD?
You just never know when, or if, you may need one.

Do I need to uninstall previous version of Firefox before installing new version?

I am worrried about installing new version (3.6.13 ) since old version (3.0.15) is working o.k. Can you advise?

When you install a release version of Firefox (current version is 3.6.15), it will by default replace the existing version. There is no need to uninstall the old version first.

Should I uninstall previous versions of adobe software when I install a new version?

I have been using Creative Cloud for a couple of years now and have always wondered why I would need an older version of the software. Considering these unused versions of software are just sitting on my hard drive and taking up space.... can anyone think of any good reason why I shouldn't uninstall these old software versions of Photoshop, Illustrator, etc.?
Thanks, Tom

It can depend on which versions these older versions are. If they are Cloud versions then I wouldn't think twice about getting rid of the older ones. But if they are from a Creative Suite you might find that they have functionality that the newer versions had stripped out of them Flash, for instance, had a number of useful functional elements ripped out of it when they came out with the Cloud version.

Can i download previous versions of firefox? the new version does not allow me to use my VPN so i have had to uninstall firefox and use internet explorer instead (ugh!)

after i downloaded firefox 4.o.1 i have no longer been able to use my VPN which i need frequently for work. it worked fine with the previous version of firefox.

Can you describe in a little more detail which part isn't working? For example, is the VPN not starting up when you start Firefox, or is Firefox not able to use the VPN tunnel?
If we can't solve it, here's the process to roll back:
First, I recommend backing up your Firefox settings in case something goes wrong. See [https://support.mozilla.com/en-US/kb/Backing+up+your+information Backing up your information]. (You can copy your entire Firefox profile folder somewhere outside of the Mozilla folder.)
Next, download and save Firefox 3.6 to your desktop for future installation. http://www.mozilla.com/firefox/all-older
You could install Firefox 3.6 over Firefox 4 (many have reported success) or you could uninstall Firefox first. If you uninstall, do not remove your personal data and settings, just the program.
Unless you have installed an incompatible add-on, Firefox 3.6 should pick up where you left off. If there are serious issues, please post back with details.
Note: I haven't actually tried this myself!

When i try to install firefox again it says the computer must be restarted to finish uninstalling previous version, but when rebooted and tried again it says the same thing, What do I do?

when i try to install firefox again it says the computer must be restarted to finish uninstalling previous version, but when rebooted and tried again it says the same thing, What do I do?

Please try this: Copy the files formhistory.sqlite (or formhistory) and places.sqlite (or places) if they exist and delete the entire Mozilla folder in %APPDATA% and also the Firefox folder in Program Files. [https://support.mozilla.com/en-US/kb/Backing%20up%20your%20information Please see this.]

There is a compatability issue between Firefox 5.0 and Java on Mac computers. How can I uninstall Firefox 5.0 and install a previous version of Firefox?

I cannot find a previous version of Firefox to install. Please tell me how to get it. Thank you

https://support.mozilla.com/en-US/questions/844734

How do I roll-back to the previous version of Firefox? An auto update occurred and now one of the programs used at the office (ACT! v6.0 SwiftMail) won't run with the browser.

The office I work in uses a very old version of ACT!, an accounting package. This package has a component called SwiftPage, an antiquated email system that enables us to email from the ACT DB. SwiftPage runs via the web browser.
Firefox just did an auto update (that I will have to find out how to turn off) and now SwiftPage won't run as it is not compatible.
Can I "roll-back" my version of Firefox or do I have to uninstall and try to re-install an older version?
HELP!

Try loading and using the add-on from this link: https://addons.mozilla.org/en-US/firefox/addon/add-on-compatibility-reporter/
Many add-ons do in fact work if you force them to run. The procedure to roll-back is given in this article: [[installing previous versions of firefox]]
Unfortunately the official Firefox policy is that you downgrade to 3.6 which is supported for a while longer, and not the now unsupported Firefox 4. If after installing and running the ''add-on compatibility reporter'' you still have problems there are ways around the official policy.
I think it is absurd that Firefox 4 may be used by tens of millions of users one day and a few days later those that upgrade to Firefox 5 should be not only told not to use a now unsupported browser, if they need to revert due to problems, but are actually obstructed in attempts to do so. See also [/questions/840397#answer-205154]

The Norton Toolbar 4.6 is disabled in Firefox 4 while it is working in previous version of Firefox. In Firefox 4 it opens with massage Norton Toolbar is incompatible in firefox 4. Is this problem have any solution?? pls tell me.

The Norton Toolbar 4.6 is disabled in Firefox 4 while it is working in previous version of Firefox. In Firefox 4 it opens with massage Norton Toolbar is incompatible in firefox 4. Is this problem have any solution?? pls tell me.

Symantec need to update their Firefox add-ons so that they are compatible with Firefox 4. They have released an update for Norton 360 to make it compatible with Firefox 4, for details see http://us.norton.com/support/kb/web_view.jsp?wv_type=public_web&docurl=20100720113635EN&ln=en_US
I do not know about other Norton products, but if you run Norton LiveUpdate it should inform you if there are updates available. If no updates are available, you can downgrade to Firefox 3.6 if you want to use the Norton add-ons.
To downgrade to Firefox 3.6 first uninstall Firefox 4, but do not select the option to "Remove my Firefox personal data". If you select that option it will delete your bookmarks, passwords and other user data.
You can then install the latest version of Firefox 3.6 available from http://www.mozilla.com/en-US/firefox/all-older.html - it will automatically use your current bookmarks, passwords etc.
To avoid possible problems with downgrading, I recommend going to your profile folder and deleting the following files if they exist - extensions.cache, extensions.rdf, extensions.ini, extensions.sqlite and localstore.rdf. Deleting these files will force Firefox to rebuild the list of installed extensions, checking their compatibility, and reset toolbar customizations.
For details of how to find your profile folder see https://support.mozilla.com/kb/Profiles

I upgrade from the previous version to Firefox 4.o, I can no longer connect to my work HTTPS website.

The site I connect to is my citrix account at work, which needs a certificate. I could connect with the previous version of Firefox (3.6). When I upgraded the browser I got the errors mentioned earlier. I changed the setting for the specific setting from false to true. I still unable to connect and got a different error. Could someone please help! Thanks - Aldo

If you used the option to delete settings, or whatever it is worded when uninstalling, Firefox will remove all your important data information from profiles for all installed versions of Firefox, and you will then need luck and a file recovery utility to try to restore the information.
You mentioned files being moved to Trash, I was hoping you may still have the required original files. I use Windows XP, and I realise Macs use different locations for files, but I think the files have the same names.
See
*[[profiles]]
*http://kb.mozillazine.org/Password_Manager
*http://kb.mozillazine.org/Profile_folder_-_Firefox
*http://kb.mozillazine.org/Recovering_a_missing_profile
*[[lost bookmarks]]
Note the last article discusses problems when bookmarks are lost, and some of the possible reasons and solutions. Obviously I do not know what has actually happened in your case, and whether or not you used the delete option I initially mentioned.

My computer freezes when I try to log in to You Tube and is still "running" after I close it. How can I go back to my the previous version of Firefox?

After downloading Firefox 4 Beta, my personal website does not display as it used to. The text is now aligned left when it was centered. Also, when I try to log in to You Tube, everything freezes. I have to use the computer task manager to close the browser. When I try to open Firefox again, I get a message stating it is still running and I must close it or re-start my computer to open Firefox again.
I would like to return to the previous version of Firefox.

You can get duplicate installation disks from Apple Customer Service. You will have to provide them with the MBP serial number and there is a charge,
Another option is to purchase the Snow Leopard retail disk from the Apple online store:
http://store.apple.com/us/product/MC573Z/A/mac-os-x-106-snow-leopard
Either option should allow you to install an OSX.
Ciao.

I Beta tested 4.0 RC1 and now can not upgrade to 4.0. Error message is need to reboot to complete prior instalation. Have removed all previous versions of Firefox, rebooted and still same error message.

I Beta tested up to and including 4.0 RC1 without major problems. However I can not now upgrade to 4.0. Same error message time and again, "need to reboot to complete prior upgrade instalation". I rebooted several times, then tried first removing all previous versions of Firefox using both MS Add/Remove and then iolo System Mechanic, then again downloading 4.0. Even after rebooting same error message. I can not therefore install/use Firefox.

Do a clean (re-)install:
* Download a fresh Firefox copy and save the file to the desktop.
* Firefox 4.0: http://www.mozilla.com/firefox/all.html
* Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
* Don't remove personal data if you uninstall the current version.
* It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
Your bookmarks and other profile data are stored elsewhere (not in the Firefox program folder) and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.

The college uses, E-bray, to read the E books from the library. The previous version of Firefox worked great with the plugin. When I upgraded to the next version of Firefox now the plugin will not work.

E-bray is a reader that allows me to easily read the college's Library's selection of electronic media. I am running version 5.0 of Firefox and the other version worked fine. It may have been version 3, I think. I have version 3 in my download. Can I load this version back onto my lap or will this really mess things up?

Try loading and using the add-on from this link: https://addons.mozilla.org/en-US/firefox/addon/add-on-compatibility-reporter/
Many add-ons do in fact work if you force them to run. The procedure to roll-back is given in this article: [[installing previous versions of firefox]]
Unfortunately the official Firefox policy is that you downgrade to 3.6 which is supported for a while longer, and not the now unsupported Firefox 4. If after installing and running the ''add-on compatibility reporter'' you still have problems there are ways around the official policy.
I think it is absurd that Firefox 4 may be used by tens of millions of users one day and a few days later those that upgrade to Firefox 5 should be not only told not to use a now unsupported browser, if they need to revert due to problems, but are actually obstructed in attempts to do so. See also [/questions/840397#answer-205154]

Why will Firefox 4 no longert allow me access to a Domino web access/IBM email account that I was accessing with the previous version of Firefox?

I have an email account at a university where I am teaching. My email address there is [email protected] . With the previous version of Firefox I was able to access my email account. After I installed Firefox 4, I no longer have access to this account. Instead I get a message telling me to reload from my browser, but I cannot see how to do this. I need to have access to this email account from my desktop computer, and so I was thinking of uninstalling Firefox 4. Also, on another website that I use as my home page, which is www.marketamerica.com/signewaller , I had it set up to automatically remember my username and password when going to my "back office" from that site, but now after installing Firefox 4 I have to retype my username and password.
Thanks for the help.
Signe Waller Foxworth

I deleted the account on my ASUS email at settings. The ASUS appeared to delete the Yahoo email account, but when I clicked on the shortcut, my yahoo email had updated and everything looks good.
Thanks for your suggestions!

Should I uninstall previous versions of Firefox?

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