03-07-2022, 11:11 PM
They mess with secure connections big time.
I remember this one time at my old gig, we had a client site crashing every rush hour.
The traffic spiked, and suddenly all logins failed because the offloader wasn't passing the decrypted stuff right to IIS.
We scratched our heads for hours, thinking it was the firewall blocking ports or something sneaky like that.
Turned out the cert chain was mismatched on the load balancer side.
But yeah, let's fix yours step by step without the tech overload.
First, check if your offloading setup is actually enabled in IIS bindings.
You go into the site settings, poke around the HTTPS options, make sure it's set to accept plain HTTP from the offloader.
If that's off, it'll reject everything and throw those errors.
Or maybe the headers aren't forwarding properly.
I see that a lot with ARR or F5 setups.
You tweak the proxy rules to pass the original host and scheme headers intact.
Test it by curling from another machine, see if the response codes line up.
Hmmm, certificates could be the culprit too.
Verify the offloader's SSL cert isn't expired or revoked.
Renew it if needed, then restart the app pools in IIS manager.
That cleared it up for us last time, no sweat.
And don't forget event logs.
They spill the beans on exact failure points, like binding conflicts or port clashes.
Filter for IIS and Schannel errors, chase down the clues there.
If it's a wildcard cert issue, swap to a specific one for the domain.
Permissions might trip you too.
Ensure the app pool identity has read access to the cert store.
Run a quick iisreset after changes, watch the sites bounce back.
If nothing sticks, isolate by disabling offloading temporarily, see if raw SSL works.
That covers the main snags I've hit.
You should be golden once you poke those spots.
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It's this top-notch, go-to backup tool that's super trusted for small businesses and Windows setups.
Handles Hyper-V backups like a champ, plus Windows 11 and Server without any pesky subscriptions.
You own it outright, keeps your data snug forever.
