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Some Blue Iris CCTV cameras blocked

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Hi there ... what seems like a slightly unusual thing has started happening since a recent MWB update.

I run the latest updates of Blue Iris CCTV security software on a patched Windows 7 professional 64bit base OS protected with Norton Internet Security Suite v22.14.2.13 and Malware Bytes Premium v3.5.1.2522 component package v1.0.374 with update package v1.0.5476
Blue Iris hosts 10x IPv4 CCTV cameras and until the last week, has been rock solid. All cameras exist in the same private subnet.

Since 11 June I have started to experience Watchdog alerts randomly from just 4 of those (10) cameras which report Signal Lost.

I initially isolated it to being just Blue Iris specific as I could fire up a web browser and access the video streams from those "inaccessible" cameras just fine.

I initially suspected Norton's firewall and spent some time diagnosing that to no avail. 

I unloaded MWB (exited the program entirely) and BINGO the cameras instantly re-connected in Blue Iris. This is a repeatable experience.

Oddly only these four cameras have been affected and the dropouts only occur sporadically and will usually correct themselves at some point if left alone, only to drop out again at some later point.
Restarting the camera stream in Blue Iris and in-fact even totally exiting and re-loading Blue Iris will not re-establish the video streams.

I'm an IT RCA tech myself but am uncertain how MWB can be blocking just those 4 cameras for only Blue Iris and how I might go about correcting this, as I already have the Blue Iris executable excluded from both MWB and Nortons.

The cameras (working and failing) all use the same Blue Iris driver and communicate on http: x.x.x.x:80 across the same LAN and switch fabric and all come into the NVR via a common NIC.
Am thinking a next step may be to turn on the "Collect enhanced event log data" in MWB.
Would appreciate some guidance on diagnosing and correcting this recent behavior.

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Yep! Turning off web protect has the same effect as completely unloading MWB... completely reproducible where one or more cameras drop into No Signal states, turn off web protect and instantly all cameras recover signal.  So now the question... how do I manage this but still have web protect enabled? 

Regards Col. Sanders

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This is a known issue our teams are working on at the moment. You can downgrade back to the previous version by using this link: https://malwarebytes.box.com/s/wj3s1yc7wqpchfms4wfu76gy7k0mind4. You will want to disable application updates in Settings -> Application or the update will redownload itself. This should be fixed in our next version

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