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Hello everyone
We're experiencing some authentication issues with our 2k19 exchange servers.
id 5817: "Netlogon has failed an additional 129 authentication requests in the last 30 minutes. The requests timed out before they could be sent to domain controller \server.ourdomain.local in domain OURDOMAIN. Please see http://support.microsoft.com/kb/2654097 for more information."
the result is that outlook clients lost their connection to exchange server, and is automatically solved after 10 minutes.
we are facing the problem 1x / week
Any ideas how to solve it?
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Hi @chris ME ,
Just checking in to see how things are going on with this issue. Have you already tried the solution provided by DSPatrick? If it works, it'd be appreciated that you can accept his post as answer to close this up. If you still need help on this, please feel free to post back for further discussion.
If an Answer is helpful, please click "Accept Answer" and upvote it.
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You may need to tweak the MaxConcurrentApi
https://learn.microsoft.com/en-us/troubleshoot/windows-server/windows-security/performance-tuning-ntlm-authentication-maxconcurrentapi
--please don't forget to Accept as answer if the reply is helpful--
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thx for reply
this has to be done on exchange server or domain controller?
It may be on multiple servers that are involved.
Just checking if there's any progress or updates?
--please don't forget to upvote and Accept as answer if the reply is helpful--
Hi, I also having same issue with my sql server running on win2kR2 but MaxConcurrentApi is not present
should I configured it and edit the value
Netlogon has failed an additional 7 authentication requests in the last 30 minutes. The requests timed out before they could be sent to domain controller \server.ourdomain.org in domain. Please see http://support.microsoft.com/kb/2654097 for more information.