Hey everyone, I'm having a bit of a frustrating issue with one of my clients. I run a file server to share files with clients across eight different countries, and all of them can access the server without a hitch—except for one. This client can map the drive successfully but experiences daily disconnects, at least once a day. I've checked and confirmed that it's not an issue with his account; he has full privileges, and his Active Directory account is configured to never expire. He's not running an internal firewall, and when the drive disconnects, he shares ping statistics showing he can reach my server without any timeouts. He is also able to connect through port 445 without problems. His antivirus is Kaspersky, and I've gone through the logs, but nothing stands out. We usually get him back online by having him disable and then re-enable his network card. He's on Windows Server 2019, while my file server runs on Windows Server 2016. This disconnect issue seems to be unique to him. Any suggestions on what else I should check?
4 Answers
Have him try remapping the drive using the Fully Qualified Domain Name (FQDN) instead of the hostname. If that doesn’t solve it, he can also try mapping it via IP address directly.
Seriously, is this a joke? How can one client have all these issues while the others are fine?
Try using `Test-ComputerSecureChannel` and check the Kerberos ticket status with `klist` and `klist sessions`. That might give you some insight into authentication problems.
Is SMB exposed to the internet for this client? That could be causing issues. It's generally not a good idea to have it open like that. Also, you might want to check if Kaspersky is interfering with the connection at all; sometimes, it can cause issues with mapped drives.
Yeah, I've had similar experiences with Kaspersky. It can block SMB traffic sometimes.