Hosting company supports IIS 8.5 and Asp.net 4.6
so downloaded    YAF.SampleWebApplication-v2.31.03    which appears to target that version
copied all directories/files to  mywebsite/forum   directory   (it is not a virtual directory)
             /bin file and all config files   (app.config, db.config, ... web.config) to  mywebsite   directory
Had no web.config before so new one should be active one
app.config already had 
   add key="YAF.FileRoot" value="~/forum" /
   add key="YAF.AppRoot" value="~/forum" /
 so made no changes, app.config also had 
     add key="YAF.BaseUrlMask" value="http://192.168.2.10/yaftest/"
so changed to
    add key="YAF.BaseUrlMask" value="http://mydomain/forum/"
changed db.config
    add name="yafnet" connectionString="data source="(local)"1;initial catalog=mydatabasename;User ID=DBAdminAcct;Password=******" providerName="System.Data.SqlClient" 


Any suggestions would be appreciated
Thanks

 

Rename YafTaskModule to TaskModule in the web.config.

PS: why use such old version?