On 6/6/21 7:39 PM, Jiří Činčura wrote:
Hi *,

What the error "Authentication error
connection shutdown" in firebird.log means?

May be something gone wrong with sec-db attachments cache. Can you please check - if you wait a minute or 2 w/o restart will it help?

Sometimes this happens after a Windows PC reboot with Firebird 3.0 as a service 
and until Firebird is restarted the .NET application (only application on that 
system using Firebird) can't connect. Once the Firebird is restarted, 
everything is OK - same application, same everything.




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