Launching a virtual desktop via VMware Horizon View 6.2.0 HTML Access fails with the error message: “ERR:p:bad method”

Problem

You’re able to successfully authenticate via the login page for HTML access:

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… but notice that launching a virtual desktop will immediately fail with the error message:

ERR:p:bad method

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Solution

This error stumped me for quite some time as I was unable to find any related forum posts or KB articles and what ended up being the issue was that the Google Chrome browser I was using could not launch the desktop:

Version: 66.0.3359.139 64-bit

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Attempting to use an alternate browser such as Microsoft Edge successfully launched the virtual desktop:

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I proceeded to try using the problematic Google Chrome browser to launch a VMware Horizon View 7.4.0 virtual desktop and was successful so this problem appears to be limited to 6.2.0.