Hi @CharlieLor ,
If you are using Internet explorer, you may take a look, if any proxy settings are enabled.
Please follow these steps.
a) Open Internet Explorer
b) Click Tools
c) Click Internet Options
d) Click the Connections tab
e) Click LAN settings
f) Uncheck any boxes that are in the Proxy server section
g) Click OK
h) Close Internet Explorer.
Please also have a check if you are using VPN or not, if yes, please disconnect it for test.
I did some research online, please also make sure there is nothing wrong with the certificate 'db'.
You may refer to this blog for SSL creating.
Regards,
Zoe
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