Windows XP seems to be the OS that simply will not die, and it seems that Microsoft has given in slightly on its plans to no longer support the aging operating system. For those customers willing to pay, Microsoft will continue patching Windows XP through its Custom Support program.

Custom Support is mainly aimed at large enterprise and industrial customers who, for legacy or other reasons, have yet to move on to newer OS versions from XP. The program will pick up from where Microsoft ends its public extended support for Windows XP (Service Pack 3) on April 8, 2014.

Businesses that elect to go the Custom Support route and stick with XP will pay approximately $200 per PC for the first year alone. The systems in the program will continue to receive patches for vulnerabilities rated as “Critical” with optional patches for “Important” security issues available for additional fees, according to Gregg Keizer writing for PCWorld. Security issues classed by Microsoft as being of low or moderate importance will not be patched at all.

Microsoft will reportedly be delivering these patches through a secure channel other than the standard Windows Update in an attempt to keep non-paying Windows XP users from getting their hands on the patches.

For now, it seems that Windows XP is still here to stay in a big way, at least in the enterprise space where it is likely cheaper to keep XP in circulation than to upgrade PCs, retrain employees, and re-code legacy applications. It will cost a pretty penny to keep the old OS up to date and (mostly) secure, however.