[DaWolfey]

I am using the /upload command to send the report to a web server via HTTPS.
I have started to get this error:

HTTP 419 error while posting data to (url)
SSL certificate OpenSSL verify result: unable to get local issuer certificate (20)

The server I am uploading to is a Microsoft Azure Web Server instance using one of their Managed Certificates. I am able to access it via a web browser with no problems - no certificate errors.

[DaWolfey]

I should add I am using version 15.6.0629a

[DaWolfey]

Just tried 15.11.1119a, same error.

[gtopala]

Just tried 15.11.1119a, same error.

HTTP 419 is an implementation-specific error code. See https://developer.mozilla.org/en-US/docs..._responses or https://en.wikipedia.org/wiki/List_of_HTTP_status_codes
The browser executes an HTTP GET command. SIW executes an HTTP POST command.
What are you using to handle the POST command?

Can you try with my test site?
siw64.exe /log:xml /s:1 /h:0 /n:0 /upload=https://siw64.azurewebsites.net/index.php