I'm trying to connect to SQL Server in R (I have Windows 10 and am using R version 4.1.3) and when I try, I get an error message about my TLS version being less than the minimum version allowed. I'd like to update from TLS 1.0 to 1.2 but am struggling to find resources online that clearly lay out how? Any suggestions?
Here's the error message I'm getting:
odbcDriverConnect(paste("Driver=SQL Server Native Client 11.0;Server=", :
[RODBC] ERROR: state HY000, code 47072, message [Microsoft][SQL Server Native Client 11.0][SQL Server]**Reason: Login failed due to client TLS version being less than minimal TLS version allowed by the server
odbcDriverConnect(paste("Driver=SQL Server Native Client 11.0;Server=", :
ODBC connection failed
Related
i followed all the steps mentioned in the below link
https://learn.microsoft.com/en-us/analysis-services/instances/configure-http-access-to-analysis-services-on-iis-8-0
But when i connect to http://servername/OLAP/msmdpump.dll in my SQL Server Management Studio i get the below error
TITLE: Connect to Server
Cannot connect to http://ServerName/olap/msmdpump.dll.
ADDITIONAL INFORMATION:
The connection either timed out or was lost. (Microsoft.AnalysisServices.AppLocal.AdomdClient)
The remote server returned an error: (405) Method Not Allowed. (System)
I wanted to make a ODBC connection from Windows PC to AS/400 DB2 server and I wrote a VBA program. But I got the following error.
Remote port could not be resolved
Then, I checked the status of server with CWSPING and got the result below:
I - Verifying connection to system 192.168.1.2...
I - Successfully connected to server application: Central Client
I - Successfully connected to server application: Network File
I - Successfully connected to server application: Network Print
I - Successfully connected to server application: Data Access
I - Successfully connected to server application: Data Queues
I - Successfully connected to server application: Remote Command
I - Successfully connected to server application: Security
E - CWBCO1011 - Remote port could not be resolved
E - CWBCO1008 - Unable to connect to server application DDM, returned 8407
I - Successfully connected to server application: Telnet
W - CWBCO1015 - Connection verified to system 192.168.1.2, but there were warnings
This means DDM service is not working on the server. ODBC connection requires DRDA, which runs upon DDM service, so I think running DDM service is the key to make ODBC connection. So I tried STRTCPSVR *DDM command but got the result below
*DDM not valid for parameter SERVER
And also tried CHGDDMTCPA AUTOSTART(*YES) PWDRQD(*YES) command, but got an error and I got stuck.
Command CHGDDMTCPA in library *LIBL not found
Does anyone have an idea of enabling DDM server on AS400?
Server: IBM AS400
OS version: V4R1
Try STRHOSTSVR *DATABASE.
STRHOSTSVR is used to start servers associated with IBM i Access and i Access Client Solutions.
STRTCPSVR is used, in general, to start servers associated with TCP/IP like FTP, Telnet, etc. Except the HTTP Server which is started via the Web Administration site at http://<server>:2001.
Additionally to the answer from #jmarkmurphy:
You can easily check netstat *cnn for open ports.
There is actually a tcpsvr named *ddm but that isn't used with ODBC.
ODBC-Access only needs host server *database. There aren't any further requirements for host servers.
For checking which services are started at tcp startup time, use strfdu, option 5 with the file qusrsys/qatocstart. From there you can easily view and change what should be started and what not.
Finally, I got connected by using JDBC. The summary of what I found is as follows:
ODBC seems using DRDA(port 446) but the server does not have DRDA/DDM service
OLEDB seems connecting Data Access(port 8471) but issued unknown error
JDBC also connection Data Access(port 8471) and it worked!
The first error I encountered when using ODBC is "Remote port could not be resolved". What happened behind this seems as follows:
ODBC asked Server Mapper(port 449) to find DRDA port(it may change on a server)
Server Mapper could not find DRDA port because the server has no DRDA service
ODBC showed "port not resolved" error
Then, I tried OLEDB this time. It checked user/password correctly but issued unknown error. When I put incorrect password, it showed "password is incorrect", which means OLEDB successfully log on to the server but got some error after sign on.
The last, I used JDBC and successfully connected! Generally, the connection url is like "jdbc:as400://" but it showed error. Using trace of JDBC, it seems to have problem on sign on to the server. So I changed the url to "jdbc:as400://:8471", then I finally connected. Looking into trace, it directly access to port 8741 and send user/password and get connected. I don't know the detail, but it worked!
Appreciated for your help!
I have disabled TLS 1.0 and TLS 1.1. in Identity Server (v4 running in a Service Fabric Cluster using WebHostBuilder, targeting .NET 4.6.2 using a self-signed cert). I have added the following in Startup.cs:
System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
And I receive the following error:
System.InvalidOperationException: IDX10803: Unable to create to obtain
configuration from: 'https://services.mytest.com:8443/oauth/.well-
known/openid-configuration'. ---> System.IO.IOException: Unable to get
document from: https://services.mytest.com:8443/oauth/.well-
known/openid-configuration ---> System.Net.Http.HttpRequestException: An
error occurred while sending the request. ---> System.Net.WebException: The
underlying connection was closed: An unexpected error occurred on a receive.
---> System.ComponentModel.Win32Exception: The client and server cannot
communicate, because they do not possess a common algorithm
I've looked at the questions here:
IDX10803: Unable to create to obtain configuration
Unable to obtain configuration from well-known/openid-configuration
I've tried the suggestions (including adding the cert to trusted root)
I don't know much about that particular piece of software but the problem here is not that the certificate is not trusted (according to the error message) but your server and client try to negotiate during TLS handshake which protocol version, cryptographic ciphers and keyexchange mechanism should be used. It would seem that the client and server have now become incompatible. Either change the client or the server.
See also for an related and post with a possible solution:
The client and server cannot communicate, because they do not possess a common algorithm
The following error seems to have appeared overnight, and is not identified with any community package that I can tell. Seems to be part of the core DDP and WebSocket modules.
stream error Error during WebSocket handshake: Unexpected response code: 404
It shows up in the log generated when starting the server. mike:mocha Mocha testing also seems to have broken.
Again, seems to have cropped up out of nowhere after having the app running correctly for a long time. May have been due to a meteor update. Meteor version is currently Meteor 1.1.0.2.
This can happen when you have a package or code on your server side that connects to another server using DDP or Websockets and there is an interruption where the server you're connecting to has a proxy and the underlying server goes offline.
This can happen from time to time. When you use websockets the connection is persisted for a very long time. It will immediately try to reconnect if there is a disconnection.
Nearly no cloud hosting provider is able to give 100% uptime so you can expect a few of these when there is an interruption. The error comes from trying to reconnect at this moment most likely.
If you have no package that bears this remote websocket connection attribute it could be meteor's package reporting system itself. You could opt out of this by adding the package-stats-opt-out package using meteor add package-stats-opt-out
My servers has been recently upgraded to support TLS 1.2 and rest other (TLS 1.0 and TLS 1.1.) has been disabled. Now when I tries to generate the reference it gives me following exception:
service Url = https://server-name/service.asmx
Error: Cannot obtain Metadata from "service url" If this is a Windows (R) Communication Foundation service to which you have access, please check that you have enabled metadata publishing at the specified address. For help enabling metadata publishing, please refer to the MSDN documentation at http://go.microsoft.com/fwlink/?LinkId=65455.WS-Metadata Exchange Error URI: "service url" Metadata contains a reference that cannot be resolved: "service url". An error occurred while making the HTTP request to "service url" This could be due to the fact that the server certificate is not configured properly with HTTP.SYS in the HTTPS case. This could also be caused by a mismatch of the security binding between the client and the server. The underlying connection was closed: An unexpected error occurred on a send. Received an unexpected EOF or 0 bytes from the transport stream. HTTP GET Error URI: "service url" There was an error downloading "service url". The underlying connection was closed: An unexpected error occurred on a send. Received an unexpected EOF or 0 bytes from the transport stream.
I tried the solution at following link but didn't worked for me, Kindly help.
support.microsoft.com/kb/888528
We recently ran into this exact issue, after PCI compliance forced us to blanket-disable SSL3 and TLS 1.0. Ultimately, the best solution we found was the same one that client apps are using to allow connectivity to web services on .NET 4.5+; namely, adding some code to adjust that setting for Visual Studio at runtime. In the most basic form, that looks like this:
System.Net.ServicePointManager.SecurityProtocol = System.Net.SecurityProtocolType.Tls | System.Net.SecurityProtocolType.Tls11 | System.Net.SecurityProtocolType.Tls12;
We did this via a VS package with a simple configuration UI, which is available in the visual studio gallery, if you want a drop-in solution:
https://visualstudiogallery.msdn.microsoft.com/63750942-1ebe-45dd-bade-552dd850873e
If you'd rather handle it yourself, all you need to do is create a VSIX package or an Add-In (both of which require the visual studio sdk).
Good luck!
I faced the same issue also, i was not able to add service reference in visual studio.
But after installing the Add-In and enabling the TLS1.2 in visual studio, I was able to update the service reference.
Tools -> Security Protocol Manager 2013
https://visualstudiogallery.msdn.microsoft.com/63750942-1ebe-45dd-bade-552dd850873e
I was getting error:
The request was aborted: Could not create SSL/TLS secure channel.
Metadata contains a reference that cannot be resolved:
An error occurred while making the HTTP request to https://...Service.svc.
This could be due to the fact that the server certificate is not configured properly with HTTP.SYS in the HTTPS case. This could also be caused by a mismatch of the security binding between the client and the server.
The underlying connection was closed: An unexpected error occurred on a send.
Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.