This is an upload of the OneCare Rewritten project which can be found at https://onecare.cloudlillith.net.
This means that I've
yet to finalise the code, due to this, Windows XP (Specifically the 64Bit version) has no support. Normal Windows XP 32 Bit is fully supported, along with Vista.
Head over to the releases tab and grab the latest release.
XP Warning: If on XP, please install .net 3.5 AND .net 4.0. Failing to do so will result in "Could not find compatible runtime to run this program" after installing OneCare.
Insert your OneCare disc, and cancel any popups that show.
Launch OneCare Rewritten and follow the onscreen instructions to install.
This tool allows users of existing Windows Live OneCare medium to install it as normal.
The official setup file that comes on the OneCare discs attempts to reach Microsoft servers that no longer exist to download additional setup packages.
This bypasses this step by installing whats on your disc, the same way the original installer would've done if the servers were online.
OneCare setup ISO or disc mounted, all versions of the disc will work, this app will auto detect which version you have.
Windows Vista (Any edition) 32-Bit (Disc Versions 1.5, 2.0, 2.5)
Windows Vista (Any edition) 64-Bit (Disc Versions 2.0, 2.5)
Windows XP (Any edition) 32-Bit (Disc Versions 1.5, 2.0, 2.5) (Please note you must be running SP2 specifically unless you have a V2.5 disc)
All other versions currently won't work, likewise for Server 2008/r2. If anyone has an image of OneCare for Server, please let me know so I can look at adding support for this. XP support is now functional.
Platform: x86/32-Bit
Targetting Framework: .net 4.0
Visual Studio 2019 Community (2022 doesn't support legacy .net versions natively)
I don't want an IP lawsuit. Microsoft own the original setup materials and explicitly state that the installer and it's contents are not to be redistributed or modified in any form. This installer is built ground up and only designed to look similar to the original installer.
No, for me to add support to that would be piracy despite this being abandonware. Please buy a disc off eBay if you're interested. I don't condone the copies people have uploaded bundled with this software. OneCare Rewritten should only ever be downloaded from here or the official website.
No, and it never will be for that matter of fact. This software is old and the installer is built soley for use on XP to Vista-era machines for people who want an authentic installation experience or to re-experience the blast from the past known as OneCare.
Big thank-you to MJD, people selling discs on eBay and Archive.Org for providing materials for me to create this.