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[DanTheTechMan]

I've spent the past week and a half or so troubleshooting internet issues, and what I discovered really surprised me. For some reason, JRiver interferes with my desktop's ability to renew the DHCP lease with my router, and blocks NEW connections (existing connections remain functional until refreshed). This occurs after roughly 2 hours after booting my desktop (give or take), and only a reboot will restore full internet connectivity. I am running the latest JRiver build (27.0.47) on a Windows 7 SP1 64-Bit system. I have Kaspersky as my security suite. What should I do to resolve this issue?

[wer]

I'm curious as to how you concluded MC was blocking your DHCP renewal. Please elaborate.

I'd suggest fully disabling or uninstalling Kaspersky and test again.

[DanTheTechMan]

I very selectively disabled any programs I had running at startup and re-enabled them, one at a time (waiting 2 hours before enabling the next one) until I concluded none of them were causing this issue. Then I loaded the programs I manually load at startup, one at a time (again waiting 2 hours before loading the next). Roughly 2 hours after I loaded JRiver, my internet dropped out. I discovered it was a DHCP issue from the Windows Event Viewer. I already tried uninstalling Kaspersky, which did not help.

[JimH]

No way that JRiver could affect your DHCP connection.

[DanTheTechMan]

I spent the past roughly week and a half troubleshooting this. Maybe what I'm seeing in the Windows Event Viewer is a separate issue (although I'm not entirely convinced that it is). Like I said, roughly 2 hours after I loaded JRiver, my internet connection dropped, and the only other programs I had running were the ones that I already deemed were not blocking my internet.

[DJLegba]

Failure to renew your DHCP lease is probably a side-effect, not a symptom. How long do your leases last? Can you ping the router after 2 hours?

[DanTheTechMan]

Local connections aren't affected. Only external connections are. Local leases are set to expire after 1440 min (24 hours or 1 day), and I can change that setting. However, the connection to my ONT box (I have Verizon FIOS) is set to expire after 2 hours, and I cannot change that setting.

[DJLegba]

Local connections aren't affected. Only external connections are.

So clearly nothing to do with DHCP. Do you perhaps mean DNS? Can you ping external connections by IP instead of name?

[DanTheTechMan]

When I said DHCP, I was only going by what the Windows Event Viewer told me. I cannot ping external connections at all after my internet drops, regardless of the method I use.

[DJLegba]

What kind of router are you using? Does it have an event log you can look at?

[DanTheTechMan]

My router is a Netgear WNDR3400 running a recent build of DD-WRT, so yes, I am able to view the log.

[DJLegba]

My router is a Netgear WNDR3400 running a recent build of DD-WRT, so yes, I am able to view the log.

And what does it say?

[DanTheTechMan]

Unfortunately I can't go back far enough.

[DJLegba]

Unfortunately I can't go back far enough.

You can't go back two hours? That's a busy log.

If your observation about MC is correct, it seems your router is blocking outbound access after two hours. Do you have Media Network enabled in MC? If so, turn it off, reboot, and see if your router is happier.

[DanTheTechMan]

Yes. It would be a busy log. I do have Media Network Enabled. I will try that and get back the results.

[wer]

Are other devices in your house also unable to access the internet after this "event" occurs?

I suggest you turn off the PC running MC/Kaspersky, and wait for the event to happen again.

If it does, while the MC PC is turned off, you can then focus on investigating the problem with your router.

[JimH]

Try setting up Windows Defender and turning off any other security software.

https://yabb.jriver.com/interact/index.php/topic,114101.0.html

[DanTheTechMan]

As far as I can tell, this issue is isolated to just the computer running JRiver MC. I can't run just Windows Defender alone safely, as I am running Windows 7. Upgrading to Windows 10 isn't an option for me, as It caused many issues for me in the past on this very computer.