Proper support for 2008 R2 requires 7.84. We had limited success at 7.82 using agent v22.214.171.124.98 until Microsoft added an extra digit on the patches in July (ie Q2032276). In order to recognize the new format, we received a client patch v126.96.36.199.130. The problem was that we were not able to do an in-place agent upgrade on our R2 servers and the vendor solution was to move to 7.84. Now, R2 has its own OS class for software and patches (as it should!). Hope this information helps.