" while making API call to UPS tracking Rest service Asked 8 years, 10 months ago Modified 6 years, Failure on HttpWebrequest with inner exception Authentication failed because the remote party has closed the transport stream Asked 12 years, 1 month ago Modified 5 years, 1 05/29/2023 17:25:44 : UpgradeServiceClient [ Thread-8 ] ERROR : “An Exception occurred while accepting new client request :An Exception occurred while accepting new client request The email never sends and I get the following error: Send-MailMessage : Authentication failed because the remote party has closed the transport stream. ---> System. IOException: Authentication failed because the remote party has closed the transport stream on Connect (). 2 on your Service Tier server. SecurityProtocol = Getting "Authentication failed because the remote party has closed the transport stream. Authentication failed because the remote party has closed the transport stream This error can occur if there is a mismatch between permissions on the SSL certificate and the We have been using an Office 365 account to send out our emails from Epicor for years and in the past 2 weeks we have been Authentication failed because the remote party has closed the transport stream #249 Closed Azure API Failed to call Backend Logic App - HTTPS 500 - Authentication Failed because the remote party has closed the transport stream Taranjeet Malik 616 23 Jun 2025, [SimpleWebTransport] ERROR: [SimpleWebTransport] Create SSLStream Failed: System. Terrible_Coder_ Authentication failed because the remote part has closed the transport stream Hi Guys, I am getting below error message when trying to get oauth2 token through external API Conclusion "Authentication failed because remote party has closed the transport stream" is a multifaceted issue that can stem from various client-side and server-side configurations. At line:18 . NET, HTTP, and other protocols. IO. K Amen 1 May 18, 2021, 3:28 PM Are you experiencing intermittent errors sending SMTP e-mails with Office 365? You may be having the issue with SSRS or PBIRS, After upgrade of Veeam Backup & Replication on the Veeam Cloud Connect service provider's backup server to version 10, tenant jobs Hi, I am getting error " Authentication failed because the remote party has closed the transport stream. I am using SslStream object to authenticate the Tcp client by It sounds like the issue is due to a mismatch between the cipher suites supported by the external supplier’s updated security To fix the email TLS error, you’ll need to enable TLS1. Mail. IOException: Authentication failed because the remote party has closed the System. This is I use the account used to send emails that don't have MFA set up, so it's not because of MFA! This post will show you how to fix the error "Authentication failed because the remote party has closed the "SmtpEx: System. 2 -- because your change is telling it that it MUST use TLS 1. SmtpException: Failure sending mail. This usually Summary: Learn how to resolve the common error "Authentication Failed Because Remote Party Has Closed the Transport Stream" in applications using . at Authentication failed because the remote party has closed the transport stream. It is most likely caused In MailStore, when you’re connecting to the archive, the following error occurs:”Error message: Authentication failed because the remote party has closed the transport stream”. I found the error on event log is about Authentication failed because the remote party has Authentication failed because the remote party has closed the transport stream Not possible to connect to the mail server smpt. Net. You may get this error when trying to call an external API. System. 2 or higher, the OLEDB driver The error provided in the first post suggests that this is a problem with the web server under load and has no relation to certificate issuance, Let's Encrypt, or Certbot. Older OLEDB drivers do not support TLS 1. This error is related to the Security Protocol Type. IOException: Authentication failed because the remote party has closed the One beautiful day I found the following exception from application error logs: “Authentication failed because the remote party has closed the transport stream exception” Fiddler Error Connecting to HTTPS Applications Fiddler Log: !SecureClientPipeDirect failed: Authentication failed because the remote party has closed the I also have recently been affected by this issue System. WebException: The underlying connection was closed: An unexpected error occurred on a send. office365. " while connecting to Power BI REST API via a SSIS Script task. You can do this by editing the registry based on If you encounter the error, "Authentication failed because the remote party has closed the transport stream," it is tied to the issue of Security Protocol Type. IOException: Authentication failed because the remote party has closed the transport stream. IOException: Authentication failed because the Challenge When adding a Service Provider on the tenant's Veeam Backup & Replication, either of the following errors occurs: When I submit the form (to send a login authentication code), the SA fails with an error Exception message: Authentication failed because the remote party has closed the I have a problem with Local agent that make me cannot deploy new application. com on port 587" The email Encryption Authentication failed because remote party has closed the transport stream, need solution Asked 3 years, 11 months ago Modified 3 years, 11 months ago Viewed 2k times You could set the SecurityProtocol in your application by adding this line: ServicePointManager.
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