The Windows Desktop x86 Runtime library is required for the new PF3 Update routine introduced in September 2022 - this forum message explains:
http://www.ocs-support.co.uk/forums/vie ... php?t=4043
Many systems already have this runtime installed; as yours doesn't, please download and install it - the message shouldn't then appear again.
(The update routine checks for new versions of PF3, typically daily; the new version addresses some issues with the previous version.)
Apologies for the inconvenience,
Martin