This policy setting controls whether users of the specified applications can save documents in the Office Open XML file format. These files usually have the following file extensions:
* Excel: *.xlsx, *.xlsm, *.xltx, *.xltm, *.xlam
* Powerpoint: *.pptx, *.pptm, *.potx, *.potm, *.ppsx, *.ppsm, *.ppam, *.thmx, *.xml
* Word: *.docx, *.dotx, *.docm, *.dotm, *.xml
If you enable this policy setting, users cannot save files in the Office Open XML format in the specified applications.
If you disable or do not configure this policy setting, users can save files in the Office Open XML format in the specified applications.
| Registry Hive | HKEY_CURRENT_USER |
| Registry Path | Software\Policies\Microsoft\Office\12.0\Word\Security\FileSaveBlock |
| Value Name | OpenXmlFiles |
| Value Type | REG_DWORD |
| Enabled Value | 1 |
| Disabled Value | 0 |