I have been having a problem with saving some documents it does not happen all the time but only sometimes. When updating an Excel document from my hard drive I click the save button and an error comes up saying Cannot open file you do not have permission.
A second error then comes up saying The file you are trying to open '7FFC5400' is a different format than specified by extension (See attached image).
The issue I have is that this is saved to my local machine which I have administrator privileges and the location is not shared so no one else could have had this open. Does this mean the document is corrupted or is it possible there could be future corruption to this file, I have some other friends with the same problem.
This also happens to some word ducoments and I'm running Windows 7 Pro (other users on Windows XP).