If your main beef with the latest version of Firefox is that your favorite add-ons are not working, don’t downgrade! Wait it out or make your add-ons compatible with any Firefox version. If, however, Firefox has become a snail or freezes or crashes regularly ever since you upgraded, downgrading may be your only option other than switching to a different browser.
Before you go ahead, back up your Firefox profile to be safe. A guide on the mozillaZineshows you how to locate your profile folder.
You do not have to uninstall Firefox to downgrade. Simply vist the Mozilla FTP Server using your browser, navigate to the Firefox version you want to downgrade to, e.g. > Firefox 4.0.1 >Win32 (for Windows 32-bit), > en-US (for US English version), download the > Firefox setup 4.0.1 exe file and run it to downgrade from Firefox 5 to Firefox 4.
Internet Explorer 9 to 8
Rather than downgrading Internet Explorer to a previous version, I would recommend you upgrade to another browser. If you are so attached to it, however, I will show you how to do it. If you want to downgrade Internet Explorer 8 to 7, please refer to this Microsoft Support article.
Go to > Start > Control Panel and under > Programs select > Uninstall a program.
On the left-hand side switch to > View installed updates.
In the list on the right-hand side find > Windows Internet Explorer 9, highlight it and click >Uninstall. Note that this will not install all of Internet Explorer. It will only uninstall the upgrade to IE9 and hence downgrade you to IE8.
Once the uninstall procedure has completed restart your computer and you should have Internet Explorer 8 back.
Note that Windows will attempt to upgrade you to Internet Explorer 9 again via Windows Updates. To prevent this from happening, go to > Start and type > Windows Update in the search field. From the results under > Programs select > Windows Update. In the respective window that opens, switch to > Change settings on the left-hand side. Under > Recommended updates uncheck > Give me recommended updates the same way I receive important updatesOR under > Important updates select > Download updates but let me choose whether to install them.
If you were looking for a way to downgrade Chrome, I have to disappoint you. Other than switching between different developer channels, I am not aware of a way to downgrade to a previous stable version of Chrome.
So what is your reason for downgrading your browser? Which browser are you attempting to downgrade and which version do you want to go back to? Please share your experiences and reasons with us!