Hello. I have updated different versions of the program many times. But I never came across the situation you described.
Look for your projects in the My Documents folder.
If you updated Windows, then on the system disk there may be a folder with files of the old version of Windows. Look in it.

Run a search on the entire computer. Search for "iwprj2" files.

Hello Dean,

In addition to Aleksej's helpful advice, if you refer specifically to a Windows update as opposed to a WebSite X5 update, then please read the following thread which may help you:

https://helpcenter.websitex5.com/es/post/214513

Otherwise, some of the solutions provided here might be useful to you:

WebSite X5 projects missing

Kind regards,

Paul

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