ProductCart is Not Compatible with TLS 1.3 or QUIC Protocols

At this time, ProductCart has not been validated on Windows Server 2022 with TLS 1.3 and HTTP/3 or QUIC protocols. We are in the process of setting up and testing this exact configuration. However, it may take some time to complete.

Potential Errors & Fixes

Having improper server settings in this regard could possibly create the following errors:

" We have detected a compatibility issue. View our help desk for more information about how to fix this error" (When attempting to log into the ProductCart Control Panel)

" www.EXAMPLE.com redirected you too many times. Try clearing your cookies. ERR_TOO_MANY_REDIRECTS" (When clicking any links within your ProductCart Control Panel)

Recommendations to Fix Errors

To fix this, our recommendation is to disable the TLS 1.3 protocol on the server by setting the following registry values to 0 and restarting the server:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\HTTP\Parameters\EnableHttp3
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\HTTP\Parameters\EnableAltSvc

To provide the highest supported level of TLS security on the server, our recommendation is to use the IISCrypto tool which can be downloaded at https://www.nartac.com/Products/IISCrypto/Download. Download the GUI version. Run it and click the "Best Practices" button at the bottom, then Apply. This will disable TLS 1.0/1.1 and reorder the cipher suites to meet current best practices. You can backup your settings prior to making any changes on the Advanced tab.

Both of these operations can be performed one after the other, then restart the server, and that should revert the server back to TLS 1.2 support.