It warning that “it does not support using office2003 to open office2007 document” when opening the safe document after deploying DSM.
2 solutions to this problem
1. Install office2007
2. Save the document as office2003 compatible mode in office2007 editor.
Office2003 needs to install a plug-in when opening Office2007（docx、xlsx、pptx）type documents. Because the feature span of 2 type files is huge, there is the risk of leakage of a secret. DSM does not support this control scene.