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I am using Payment Data Transfer and I am attempting to use Paypal Sandbox for testing. It stopped working correctly but I haven't made any changes so it looks like the issue is on Paypal's end.
When I click on a subscription button it takes me to Sandbox Paypal where it offers me to create a paypal account or login with Paypal.
Choosing the login option, a warning screen is showned and indicates the following information:
"Your connection is not private Attackers might be trying to steal your information from www.sandbox3.paypal.com (for example, passwords, messages, or credit cards). NET::ERR_CERT_COMMON_NAME_INVALID This server could not prove that it is www.sandbox3.paypal.com; its security certificate is from www.sandbox.paypal.com. This may be caused by a miconfiguration or an attacker intercepting your connection. Proceed to www.sandbo3.paypal.com (unsafe)" .
If I tell chrome to proceed anyway it allows me to view the generic login in the following url: https://www.sandbox3.paypal.com/signin/?returnUri=https%3a%2f%2fwww%2esandbox3%2epaypal%2ecom%2fus%2... (note that the htpps:// is red and scratched).
After logging in, it takes me to "my account" and doesn't ask me to confirm the payment.
NOTE: Before the request error, this issue was already happening.
Here is a stackoverflow question showing the problem - https://stackoverflow.com/questions/44640024/paypal-sandbox-ssl-issue-redirect-issue/44652397
Solved! Go to Solution.
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Hi All,
I've no update to share at the moment, our developers are still investigating the cause of the issue.
Once I receive an update that the issue is resolved, I'll ensure to let you all know.
Apologies for any inconvenience.
Justin
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I am also experiencing the same issue while trying to access www.sandbox3.paypal.com, accepting to continue unsafe let continue adn then open the login form but the accounts used for the sandbox didn't work so we cannot test the store. Hopefully this issue could be resolved as soon as possible.
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@MTS_Justin, @MTS_Ciaran, why don't you give feedback? This is getting very disturbing and my clients are getting VERY upset! I'm loosing clients because of this issue.... PLEASE give feedback!
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Thanks!!!!!
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Any update from PayPal?
Has anyone found any workarounds?
Thanks,
Simon
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One more week without solving the problem... I need to test the website with PayPal before going live!!
Thanks......

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The issue should be resolved now.
The domain will still show "sandbox3.paypal.com", but the invalid security certificate message should no longer appear and we'll resolve the incorrect domain name soon
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