SSPI handshake failed with error code 0x8009030c [Fix]

Implement the solutions in this guide to fix the error

5 min. read

Updated onOctober 4, 2023

updated onOctober 4, 2023

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Key notes

Several SQL Server users have been encountering theSSPI handshake failed with error code 0x8009030c, state 14 while establishing a connection with integrated security; the connection has been closed.on Windows PCs relying on Windows authentication to connect to a SQL Server.

This SQL server error happens due to Kerberos failure as a result of which the user authentication is unsuccessful.

Why do I get the SSPI handshake failed with error 0x8009030c?

The error code 0x8009030c generally shows up due to the Active Directory and network-related issues. Some of the other reasons are as follows:

If you are looking for effective solutions to easily get past the SSPI handshake failed with error code 0x8009030c, this guide has got you covered.

How do I fix the SSPI handshake failed error code 0x8009030c?

1. Restart the SQL server browser services

If the SQL Server Browser service running in the background encounters a problem, a problem in establishing the connection may occur, causing the SQL 0x8009030c error; restating it will flush out the underlying cache fixing the issue.

2. Modify the registry

Loopback check is a security feature on your OS that restricts access to web applications via a fully qualified domain name (FQDN) if the access attempt was from the system hosting the application.

As reported by several SQL users, disabling the Loopback check option helps resolve the SSPI handshake failed error with error code 0x8009030c.

3. Sync target server clock

4. Allow RPC dynamic port range through the Firewall

That’s all about it! We’re hopeful that the SSPI handshake failed with error code 0x8009030c error will be easily resolved by applying the solutions listed in this guide.

You want to check out this guide if you run into theMicrosoft SQL Server Error 18456when trying to log in.

In case you need any further assistance, feel free to drop us a comment below.

SSPI handshake failed with error code 0x8009030c [Fix]#

Why do I get the SSPI handshake failed with error 0x8009030c?#

How do I fix the SSPI handshake failed error code 0x8009030c?#

1. Restart the SQL server browser services#

2. Modify the registry#

3. Sync target server clock#

4. Allow RPC dynamic port range through the Firewall#