If you take a look through Avaya Message Manager's official webpage, you will see that the 5.1.1.8 version works with Windows 7, but there is no information to assure you Avaya Message Manager works with Internet Explorer 10. Therefore, for this purpose, I recommend you to get in touch with the developer and ask him about the compatibility with Internet Explorer 10.
If you take a look through Avaya Message Manager's official webpage, you will see that the 5.1.1.8 version works with Windows 7, but there is no information to assure you Avaya Message Manager works with Internet Explorer 10. Therefore, for this purpose, I recommend you to get in touch with the developer and ask him about the compatibility with Internet Explorer 10.