Collin S. Posted July 26, 2018 Share Posted July 26, 2018 Hey guys, I want to use PayPal as payment gateway on my shop but I get this error in the gateway log "IPN Handshake Invalid". I saved my API stuff in the settings and I also activated the IPN to my website, also I set the language encoding to UTF-8 on paypal :/ Have someone an idea to fix this problem? I have customers who want to pay some and PayPal worked last month... Thanks. Best regards, Collin. 0 Quote Link to comment Share on other sites More sharing options...
Collin S. Posted July 26, 2018 Author Share Posted July 26, 2018 EDIT: When someone wants to pay something he will come to a PayPal site which says that he should try it again later... So it isn't possible to send money. 0 Quote Link to comment Share on other sites More sharing options...
WHMCS Technical Analyst WHMCS William Posted July 27, 2018 WHMCS Technical Analyst Share Posted July 27, 2018 Typically this will indicate a charset issue, but you've already seen to that. Is this happening on all payments you've attempted, or only subscriptions? Any subscriptions made with the old charset in place will need to be cancelled and re-subscribed. If it's happening for all payments and you've double checked the charset on both ends, I would suggest submitting a ticket to our support desk so we can take a look and get this resolved for you. 0 Quote Link to comment Share on other sites More sharing options...
Collin S. Posted July 27, 2018 Author Share Posted July 27, 2018 4 hours ago, WHMCS William said: Typically this will indicate a charset issue, but you've already seen to that. Is this happening on all payments you've attempted, or only subscriptions? Any subscriptions made with the old charset in place will need to be cancelled and re-subscribed. If it's happening for all payments and you've double checked the charset on both ends, I would suggest submitting a ticket to our support desk so we can take a look and get this resolved for you. Hey William thanks for your reply! Yes I double checked the charset, I also changed utf-8 at WHMCS dashboard in Caps, but the problem still exist. And now I made a new invoice from my account and I also can’t pay with PayPal so it seems for all payments :/ 0 Quote Link to comment Share on other sites More sharing options...
Collin S. Posted July 28, 2018 Author Share Posted July 28, 2018 On 7/27/2018 at 10:17 AM, Collin S. said: Hey William thanks for your reply! Yes I double checked the charset, I also changed utf-8 at WHMCS dashboard in Caps, but the problem still exist. And now I made a new invoice from my account and I also can’t pay with PayPal so it seems for all payments 😕 I created a ticket with the same title 🙂 (only for moderators!) 0 Quote Link to comment Share on other sites More sharing options...
NetVicious Posted October 3 Share Posted October 3 I got this same problem. I fixed it enabling TLSv1.2 on the available ciphers on my web server. Before checking this bug I had only enabled the TLSv1.3 and Paypal seems to use TLSv1.2 to send the IPN messages to the WHMCS callback. 0 Quote Link to comment Share on other sites More sharing options...
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