can you log onto the server ?
if yes go to the equivalent url https://yourdns.com/webadaptorname/portaladmin/federation/servers
click on the name and then validate and have a look at the error there
ArcGIS datastore needs to be registered with https://yourdns.com:2443/arcgis/datastore on your server.
you can also in a administrative command prompt check if datastore has a problem by running this command
Hope it helps
thanks for your reply but the two links are not reachable for me i don not know why, and regarding the command, this was the massage came out "'C:\Program' is not recognized as an internal or external command,
operable program or batch file." and when I followed the the path "C:\Program Files\ArcGIS\DataStore\tools\describedatastore.bat" I did not find the folder DataStore
let me get some history is everything installed on one server or multiple servers ?
on the server you can try https://localhost:7443/arcgis/portaladmin/federation/servers if this is the server that portal is installed on.
have a look at your programs and features the web adaptors will be listed there
If you go to add remove programs is ArcGIS Data Store installed ?
How about performing a search for describedatastore.bat on the server where you installed Data Store to see if it is on another local drive such as E: that might be available in addition to the C:? Hopefully finding this bat file and running it will provide some additional info on what the issue is for you.
The questions the others are asking are likely relevant in certain circumstances, but can you first fully explain what you are trying to do?
Are you attempting to register an Enterprise Geodatabase (e.g. SQL Server, Oracle, PostgreSQL) as a data store in your Portal?
or are you trying to register/validate ArcGIS Relational Data Store associated with your ArcGIS Hosting Server?