Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Unfortunately MSFT has decided to abandon the web building functionality in
Publisher and started deprecating it in Pub 2010 and went a step furhter in Pub 2013 and stripped out the option to insert an HTML code fragment. I don't know how further hobbled it is in Pub 2016.
Reference: Web functionality Pub 2010:
http://office.microsoft.com/en-us/publisher-help/web-functionality-HA101877287.aspx
You can still create a single or even a multiple page site by File > Save & Send > Publisher HTML > and you have two options, click the drop down arrow beside Web Page (HTML) which will produce your index.htm file and index_files folder as you are used to and you will see the option of Single page or MHTML file. If you choose the multiple page you will have to manually build a hyperlink navbar to move among the pages.
Your best choice is to open one of your old Publisher web files and it will 'activate' the web tab and most of the web building functionality you had before, in Pub 2010.
If you don't have one of your old web files from a previous version of Publisher,
then there is still one template available online. If you download and open
it, it will 'activate' the web tab in Publisher 2010. MSFT has made it a bit hard to find:
Go to File > New > and under Available Templates choose Online Templates > scroll down under More Templates to the More Categories folder > under the Business Category click the All Business Folder > you will see about ten templates and at the bottom a link to More Office.com Templates (152) > scroll all the way to the bottom of those templates and you will see one website template called Web site (Tabs Design), download that template and save to your hard drive. This template will activate the web tab and you can work with it as you did all web templates in Pub 2007 and older.
With all this said the handwriting is on the wall. You should be moving away from building your site with Publisher. As I said, as of Pub 2013 they stripped away the ability to insert an HTML code fragment which is an essential tool to build anything but the most basic site. I imagine this functionality is further deprecated in Pub 2016.
MSFT Web Expression is now free and is a full standards compliant web program but also has a huge learning curve. It is over kill form most people that have used Publisher to build their sites. You might also look at WordPress which is also free. Even your web host probably has a free copy and templates are available that look like traditional web pages or blogs. I would also suggest Serif WebPlus which works much like Publisher did and is where I wish MSFT had taken Publisher webs. Download the free starter version which may be all you need and within a couple weeks Serif will start emailing huge discount offers on the newest full version. And look to your web host for a free web building module for basic sites. There are lots of options out there and you should probably start finding an option to Publisher.
DavidF
Thank you for the very helpfu information.
Regards
Gunner Sørensen