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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?


Additional System Details

This happened

Not sure how often

This started when...

FireFox auto upgrade

Installed Plug-ins

  • Office Plugin for Netscape Navigator
  • Citrix ICA Client Plugin (Win32)
  • ActiveTouch General Plugin Container Version 103
  • Java(TM) Platform SE binary
  • Shockwave Flash 9.0 r115
  • Next Generation Java Plug-in 1.6.0_24 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Windows Presentation Foundation (WPF) plug-in for Mozilla browsers
  • Nitro PDF Plug-In For Firefox and Netscape
  • Adobe Acrobat Plug-In Version 7.00 for Netscape
  • Npdsplay dll
  • DRM Store Netscape Plugin
  • DRM Netscape Network Object


  • User Agent: Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0

More Information

shut down both programs and restarted. Same problem.

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622 solutions 8020 answers

Helpful Reply

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