What to do if a PowerPoint document doesn't open a prompt access error

Recently downloaded a number of PPT format files from the Internet, the suffix name has a. pptx two different versions of the file, open always appear: PowerPoint found that the contents of the **.ppt is problematic. PowerPoint can try to fix this presentation. If you trust the source of this presentation, click Repair. Let colleagues on their own computer, can be opened, on my computer can not open, is very depressed

1, error in the window mode, and the document automatically closed, the following figure:

2, if you click "Repair", then there is no access, the following figure:

3, just right hit not open the ppt file, click the "properties" → "unlock" → "OK" can be.

Reason: This file is from another computer, and our own system is WIN7 and may be blocked to help protect the computer. This method can only be solved temporarily.

Ultimate Solution One:

1, open IE Browser, point Tools menu, click Internet Options, and then select the Advanced tab.

2, to find "Check the download of the program's signature", cancel its hook and then confirm it.

The Ultimate Solution II:

1, open a PPT click "File" inside the "option"

2. Continue to find: Trust Center-Trust Center Settings-protected View, as shown

3, in the pop-up window, the right "protected View" under the three Check option to cancel.