I have Lead Generation Landing Pages for people to register to download PDF files. Whenever someone registers, the landing page adds them to a contact list named specific for that PDF. I have an automation setup, so when an email is added to a PDF-specific contact list, it generates an email with the link to download the document. The URLs for the landing pages are in various places on my website.
Recently, whenever I click on one of the landing page links, I get a browser error:
This site can’t provide a secure connectionlp.constantcontactpages.com sent an invalid response.
Try running Windows Network Diagnostics.
ERR_SSL_PROTOCOL_ERROR
It doesn’t matter if I click the link on my website or within the setup on Constant Contact’s website; I get the same error.
After some troubleshooting, it turns out that my computers are the only ones getting this error – people not on my home network have no error; even my cellphone gets the error if it is on Wi-Fi, if I remove it from Wi-Fi, it works with no error. It seems obvious that something in my network is causing the error.
I’ve tried several things:
- Rebooting the router
- Rebooting my switch (PCs are on ethernet)
- On 2 different PCs
- I tried Chrome and Firefox
- Clearing browser cache
- Disabling all extensions
- Incognito mode
- Deleting every Constant Contact-related cookie off the computer
- Verify system clock is accurate
- Clear SSL state
- Disabling Anti-virus and firewall (Norton 360)
- Verify Windows up to date
- Verified browsers up to date
Not sure how to remedy this, any ideas?