It may happen that - although a browser was selected as the default browser in Windows - links in the preview open with another browser. In this case, check the entries in the following registry keys and adjust them for the desired browser.
HKEY_CLASSES_ROOT\http\shell\open\command
HKEY_CLASSES_ROOT\https\shell\open\command
To open the links e.g. in Chrome the default value should be as follows:
"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" -- "%1"