Report Builder cannot connect after successful connection test - reporting-services

I have never faced such a problem. On the remote server outside our domain was created a new SSRS server. Everything seems to working fine, I could connect to ReportServer via https also to Reports.
Then I opened my Report Builder write connection there and it was also properly connected.
But after I tried creating new Data Source the problem begins.
In build connection function its all OK.
After that in Data Source Properties when I tried to test connection it gives me this error.
OKay I still decided to try create something in Dataset with simple query and it connect to SQL server to specified database and also I can see a fields in field list !
But after all that hope I'm still unable to run any report here. So can anyone please help me or guide me to any solution ? Thanks !

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How to fix Named Pipes Provider, error: 40 - Could not open a connection to SQL Server?

I'm having trouble connecting or logging in to my SQL Server database. I had a previous working instance before, but I forgot the password and decided to just reinstall the whole thing since I don't have any data to lose. I realized that was a bad idea but now, each time I attempt to log in to my SQL Server, I get the following error message:
I tried to search for an answer, but it seems nothing is working. Here is what I tried so far:
Enabling the Named Pipes from the SQL Server Configuration Manager under the SQL Server Network Configuration tree item
I tried restarting the SQL Server item from the list of services in the Services application
I tried restarting everything in the SQL Server Configuration Manager that is related to my database or at least have my instance's name on it
There are other things that I tried which I fail to remember. Any help would be much appreciated.

On Premises Reporting Services won't connect to SQL Azure databaes

I'm trying to create a Reporting Services report that connects to an Azure SQL database.
The data-source creates and tests successfully:
But when I try to create an associated data-set I get the following error. Has anyone seen this before, and knows how to fix it?
I can connect to the instance just fine through Management Studio.
On a second test, i was able to reproduce it when i start typing un-recognized connection string parameters(random characters) in the connection string field of data source. You need to double check your connection string.

Greyed out Connection options in SSMS

I've run into an instance where I created a new query window, right-clicked to connect to a server and found the following options:
Come to find out the reason this happened was because I created the new query window from a multi-instanced registered server such as below:
Just make sure to create your new query window from a single instanced registered server.

Communication Link Failure mySQL NetBeans

Hi everybody I'm new and I'm having some trouble with a connection with netbeans and mysql, I need a database online I created one at 000webhost.com but I think that something's wrong .... if any have some idea or other server I really need to connect a database from a server online with an app in netbeans.
Here is my configuration:
If you have any ideas to connect any database like sql server or postgres or mysql with a database online but works please tell me, I need some idea or some HowTo.
From your first screenshot (the second screenshot doesn't load for me) it looks correct. If you have double checked all the details provided you will have to contact your hosting provider. If it were a problem with NetBeans or the driver itself you would get a different error.
Make sure you copy details from an email rather than retype them to prevent mixing up things like 0 and O. Also be sure when your copy the text you don't catch extra spaces or hidden tabs.

Trying to create a new linked server in SSMS: Can't find table 0

All of my Linked Servers stopped working and I have no idea why.\
When I try to create a new linked server in SSMS I get the following error:
Can't find table
Suggestions?
I'm on 2008 R2.
Update: I was able to connect to SQL, or least it looks liked I was connected in the Object Explorer, but when I try to open a Query Window:
Login failed. The login is from an untrusted domain and cannot be used
with Windows authentication. (Microsoft SQL Server, Error: 18452)
I seem to have no problem signing onto the domain when rebooting my PC..
Bizarre. Rebooting didn't help, but restating the SQL ServerService seemed to corerct the issue.
Update:
Now I am getting
OLE DB provider "SQLNCLI10" for linked server "servername" returned message "Not enough storage is available to complete this operation.".
Final Update:
Total corruption, error message after error message within SSMS whenever I touch teh Link Server functionality.
Solution: Delete ALL the linked servers and re add. This stabalized everything.
Update:
Something about hitting a DB2 linked serevr that just trashes my whole SQL environment.It happened when I recreated the DB2 linked server.