There are extra security protocols that are not needed for SES Web. There may be a problem with the differences between 2012 and 2016 and up of Windows Server.
The major difference is with self-signed certificates for SSL in IIS:
Server 2012 creates self-signed certificates with SHA Hash. SHA Hash needs to be enabled.
Server 2016 and 2019 create self-signed certificates with SHA256 Hash. SHA Hash does not need to be enabled, but SHA256 does.
Below are the protocols that is required for 2016 Server and up. Only the boxes with checks are required:
Below is the required change for Server 2012. (See the red arrow):
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- Updated on Feb 6, 2026
- 1 minute(s) read
- VN
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