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[JJoe]

(Mar. 17, 2020 04:08 PM)Anno Domini Wrote:  Hi JJoe, I'm using Kerio 2.1.5

There's a(nother) blast from the past. Sidki and other Proxomitron users were using Kerio 2.1.5. So, it must have worked well enough for them.

If I remember correctly tho, some reported the combination of Kerio, a local proxy and|or antivirus could be flaky. Also, the use of a local proxy could create a hole that was closed by adding rules to Kerio.

I never used Kerio so I can't help much.
First, I'd see if disabling any antivirus helped.
Then, double check local proxy configuration in Kerio.
Then Google...