Log-off Event 4634 immediately after log-on

Our Windows 2012 R2 domain controller records a Log off Event 4634 (type 3) in Event Viewer almost immediately after a user has logged on. The Event Log states the user has successfully logged off.

However, the user remains connected and can access network resources.

Is this usual behavior and what could be causing it?

Many thanks in advance
matedwardsAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Hello ThereSystem AdministratorCommented:
4634: An account was logged off

For network connections (such as to a file server), it will appear that users log on and off many times a day. This phenomenon is caused by the way the Server service terminates idle connections.

If a user turns off his/her computer, Windows does not have an opportunity to log the logoff event until the system restarts. Therefore, some logoff events are logged much later than the time at which they actually occur.

ANONYMOUS LOGONs are routine events on Windows networks.

Microsoft's comments:
This event does not necessarily indicate the time that a user has stopped using a system. For example, if the computer is shut down or loses network connectivity it may not record a logoff event at all.

Source
Hello ThereSystem AdministratorCommented:
Event 4634 does not mean the account logoff itself. It is categorized as related to a Logoff task. E.g. Exchange can generate these events...
So don't be concerned about it.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
matedwardsAuthor Commented:
Thank you.
We have a Sophos UTM that relies on Event 4768 to authenticates domain users to access the WAN. Unfortunately, it is terminating active clients. I noticed Log off events such as 4634 and wondered if these could be the cause of the premature termination but I do not believe it is. Many thanks for your help and simple example such as an Exchange event.

Many thanks again.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows OS

From novice to tech pro — start learning today.