# Need help unistalling Trend Micro. **URL:** \ **Category:** Factual Questions\ **Created:** [August 13, 2008, 12:32am UTC](https://boards.straightdope.com/t/need-help-unistalling-trend-micro/459794 "2008-08-13T00:32:38Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Lakai](https://avatars.discourse-cdn.com/v4/letter/l/9de0a6/32.png) [@Lakai](https://boards.straightdope.com/u/Lakai)\ **Post date:** [August 13, 2008, 12:32am UTC](https://boards.straightdope.com/t/need-help-unistalling-trend-micro/459794/1 "2008-08-13T00:32:38Z")
In order to join my schools network I had to install McAfee Antivirus software. I didn’t delete Trend Micro all the way and while installing McAfee I got the blue screen of death. So I did a system restore to a point before I deleted Trend Micro and installed McAfee. Now when I try to uninstall Trend Micro I get this message: > [@](#): > > An interruption prevented the setup program from completely installing Trend Micro Internet Security. The setup program has not changed your computer. When ready to finish installing the software, simply restart the setup program. Click Finish to close the installation wizard. All three methods from their [site](http://esupport.trendmicro.com/support/viewxml.do?ContentID=EN-1033129) won’t work. Anything else I can try? ---
**Author:** ![gotpasswords](https://avatars.discourse-cdn.com/v4/letter/g/c57346/32.png) [@gotpasswords](https://boards.straightdope.com/u/gotpasswords)\ **Post date:** [August 13, 2008, 5:09pm UTC](https://boards.straightdope.com/t/need-help-unistalling-trend-micro/459794/2 "2008-08-13T17:09:14Z")
Antivirus apps work their way so intimately into the operating sysem that if the regular removal methods provided by the manufacturer aren’t working, you’re better off backing up your data and re-installing Windows. Hopefully, if you’re using the computer manufacturer’s image disc, it doesn’t pre-install the “wrong” AV application. If it does, at least it should be easy to get rid of with the uninstall tools. ---
**Author:** ![Qwisp](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/qwisp/32/397_2.png) [@Qwisp](https://boards.straightdope.com/u/Qwisp)\ **Post date:** [August 13, 2008, 10:00pm UTC](https://boards.straightdope.com/t/need-help-unistalling-trend-micro/459794/3 "2008-08-13T22:00:41Z")
If you are comfortable editing the registry you can try removing it there. I had quite a few instances of corrupt Trend Micro installs that had to be removed manually. I had good results, but be prepared to do a total restore if anything goes wrong. ---
**Author:** ![yoyodyne](https://avatars.discourse-cdn.com/v4/letter/y/a9a28c/32.png) [@yoyodyne](https://boards.straightdope.com/u/yoyodyne)\ **Post date:** [August 14, 2008, 12:30am UTC](https://boards.straightdope.com/t/need-help-unistalling-trend-micro/459794/4 "2008-08-14T00:30:38Z")
You can try re-installing Trend Micro and then uninstalling it again. ---
**Author:** ![Lakai](https://avatars.discourse-cdn.com/v4/letter/l/9de0a6/32.png) [@Lakai](https://boards.straightdope.com/u/Lakai)\ **Post date:** [August 14, 2008, 3:21am UTC](https://boards.straightdope.com/t/need-help-unistalling-trend-micro/459794/5 "2008-08-14T03:21:03Z")
[QUOTE=yoyodyne] You can try re-installing Trend Micro and then uninstalling it again. [/QUOTE] I installed a trial version through their website. It won’t let me reinstall because it sees I still have one already installed. ---
**Author:** ![astro](https://avatars.discourse-cdn.com/v4/letter/a/9dc877/32.png) [@astro](https://boards.straightdope.com/u/astro)\ **Post date:** [August 14, 2008, 4:03am UTC](https://boards.straightdope.com/t/need-help-unistalling-trend-micro/459794/6 "2008-08-14T04:03:52Z")
[http://www.randomfix.com/2007/07/19/uninstalling-trend-micro’s-pc-cillin-internet-security-suite-without-a-password/](http://www.randomfix.com/2007/07/19/uninstalling-trend-micro%e2%80%99s-pc-cillin-internet-security-suite-without-a-password/) ---
**Author:** ![Lakai](https://avatars.discourse-cdn.com/v4/letter/l/9de0a6/32.png) [@Lakai](https://boards.straightdope.com/u/Lakai)\ **Post date:** [August 14, 2008, 8:21pm UTC](https://boards.straightdope.com/t/need-help-unistalling-trend-micro/459794/7 "2008-08-14T20:21:52Z")
I did a systems restore again. Removed Trend Micro with Vista’s uninstaller. Installed McAffee and got the blue screen again. I tried to uninstall Trend Micro using the third method on their website (that I posted in the OP) and then it worked. :dubious: Oh well. I’ll take whatever gets the job done.