Fix PowerPoint File Format or File Extension is Not Valid Error

“I need help in order to repair corrupted PowerPoint file after error ‘PowerPoint cannot open the file xxxx.ppt because the file format or file extension is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file’ On Windows system. Anyone who is aware about solution for this problem, please help me. Thanks in advance!!”

PowerPoint plays vital role in Microsoft Office Suite to create presentations of seminars, project demonstrations, business issues and many more. However, due to various reasons PowerPoint files might get corrupt and display error message as specified in above scenario. PowerPoint file format or file extension is not valid error will occur due to malware attack on system. Malwares like Win32/Crilock.A and Win32/Buma!rts which comes under ransomware malware main causes this error.

One can detect these malware and remove by using powerful anti-virus software, but corrupted PowerPoint files due to these malware can’t be fixed by removing these malwares. However, the corrupt PowerPoint file can repair using in-built “Open and Repair” option available. Follow below mentioned steps to fix erroneous PowerPoint file:

Launch Microsoft Office PowerPoint application -> Click on “Open” option -> Select the corrupt PowerPoint file -> Now, click on the drop down list beside “Open” button and then select “Open and Repair” option to fix corrupt presentation. In case the above method doesn’t work, then you can fix corrupt PowerPoint file after error PowerPoint file format or file extension is not valid using relevant PPT file repair software.

PowerPoint file repair software

Yodot PPT Repair application is one of the finest PowerPoint file repair software, which has well-inbuilt algorithm to mend PPT file that showing “PowerPoint file format or file extension is not valid” error on Windows computer. This application can also repair PPT file not opening after CRC error, header corruption, storage device corruption, etc. Along with PowerPoint PPT file, this utility repair PPS, PPTX and PPSX files efficiently. The program repairs PowerPoint file and extracts its contents including text, animations, images, formatting, objects, tables, sound effects and so on. Including this, the software can be easily installed on Windows system running with Windows 8, Windows 7, Windows Vista, Windows XP, Windows Server 2008 and Windows 2003 operating systems.

Steps to fix error PowerPoint file format or file extension is not valid:


  • Maintain updated anti-virus software to detect and fix virus or malware infection on system
  • Prefer taking backup for essential PowerPoint files on various storage devices

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