RH 2020 - CHM output - Search not working, Favorites tab missing

It looks like you installed 2020 when it was at 2020.0. That version did not install the Microsoft Help Compiler. Can't generate a CHM output.

To be fair it is not Adobe who are sunsetting CHMs. Microsoft stopped them working on networks back in 2004 for security reasons and Microsoft have not updated the compiler since then. Because of that many authors stopped using them. 

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See www.grainge.org for free Authoring and RoboHelp Information

Thanks for the help. I also built the sample project as CHM. The sample project had broken Search functionality and the topics did not display in the topic frame, so the problem seemed to point to something missing in my machine.  I spent a lot of time sleuthing this issue last night and was able to resolve it. Apparently my fairly new Windows 10 laptop was missing HTML Workshop and the essential DLLs (required for CHM output) that install with the software. After I installed HTML Workshop I was able to build the CHM and everything performed as expected.

It appears that CHMs are slowly being deprecated because it took a lot of digging to find a download site for HTML Workshop that was still viable http://www.helpgenerator.com/html_help_workshop.htm#.YPGGV-hKiUk

Also, the once-robust configuration form for Microsoft HTML Help that was easily found in RoboHelp of the past has dwindled to an obscure, limited, hard-to-find form in RH 2020. Adobe appears to be quietly sunsetting CHMs by making them more difficult to configure and omitting key information about configuring Microsoft HTML Help in their online help -- for example, the online help has no information about the all-important Default Window selection on the Layout tab and offers no information on how to configure the default window in the Window Settings form.

I just tried the supplied About RoboHelp sample project and search is working fine. Please try that and it will tell us whether it is your project or your environment.

________________________________________________________
See www.grainge.org for free Authoring and RoboHelp Information

Is your version of RH2020 running patch 5? You should try upgrading your RH2017 project with that version. If there are still problems, you will need to make a copy of the RH2017 project and run the project through RH2019 Classic first, then jump to RH2020. Supposedly your RH2020 subscription includes RH2019 to be able to be downloaded.