This isn't possible in Microsoft PowerPoint. If you want to start a new series of page numbers within a presentation, create another presentation for those slides and link to it with a hyperlink.

To avoid this, you might try the following:

• Put all your hidden slides at the end of the presentation. That way, all the slides that you are showing will be numbered consecutively.
• If you use hidden slides, don't apply slide numbers or page numbers to slides or notes.

This can't be created automatically in Microsoft PowerPoint; instead, you should type in the path and file name as a header or footer and update it manually. On the View menu, click Header and Footer, select the tab you want, click Footer or Header as appropriate, and then type the path.