Windows-Easy

Registry Error: A file can not open blocking by registry policy in PowerPoint 2007

You can open it through this steps:

Step 1: Click Start, click Run, type regedit in the Open box, and then click OK.

Step 2: Locate and then click one of the following registry subkeys, as appropriate for your version of PowerPoint: HKEY_CURRENT_USER\Software\Policies\Microsoft\Offi ce\12.0\PowerPoint\Security\FileOpenBlock.

Step 3: After you select the subkey that is specified in step 2, locate the DWORD value. The “More Information” section describes the different DWORD values based on the version of PowerPoint.

Step 4: Right-click the DWORD value that you want, and then click Modify.

Step 5: In the Value data box, type 0, and then click OK. On the File menu, click Exit to exit Registry Editor.