Today I wanted to install SharePoint Administration Toolkit 4.0. Because there was an earlier version of Administration Toolkit installed on that machine, I got an error saying I have to uninstall all previous versions.

I went to Programs and features and clicked on SharePoint Administration Toolkit and there was first surprise, no Uninstall option. Cool I sad to myself. So I Chose Change option and the clicked "Tis feature and all subfeatures will not be available.", which should unintall SharePoint Administration Toolkit. I was so wrong. I got an error.

So the only thing I was able to do was to first uninstall BatchSiteManagerLinks feature via stsadm: stsadm.exe -o uninstallfeature-name BatchSiteManagerLinks

and then go to Programs and features and click on change option and choose "Tis feature and all subfeatures will not be available." and because you already unistalled feature from Central Administration you can leave "No" in the next step. Just click Finish at the end and now you can install SharePoint Administration Toolkit 4.0.

Voilà