How to fix a corrupt file on edexcel 2010

I was working on a spreadsheet for 4 hours then suddenly the file crashed. however there was autosave so i immediately thought it was fine, however i saved it again and then clicked on it to notice that the file would say it's corrupt and file format is invalid.
i need help with this problem please

Did you save it with the same name?
That can cause a problem.
See this from MS regarding location of files.
https://support.office.microsoft.com/en-GB/article/Automatically-save-and-recove r-files-6c6425b1-6559-4bbf-8f80-4f038402ff02
Find an automatically saved or recovered file
The next time that you open an application, files in the AutoRecovery folder are listed in the Open Recent list. Or you can find the files in the /Users/ username/Library/Application Support/ Microsoft/Office/Office 2011 AutoRecovery.
In the Finder, find automatically saved files in /Users/ username/Library/Application Support/ Microsoft/Office/Office 2011 AutoRecovery. Note If you close a file and click Don't Save, the file is deleted from the AutoRecovery folder.

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Did you save it with the same name?
That can cause a problem.
See this from MS regarding location of files.
https://support.office.microsoft.com/en-GB/article/Automatically-save-and-recove r-files-6c6425b1-6559-4bbf-8f80-4f038402ff02
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In the Finder, find automatically saved files in /Users/ username/Library/Application Support/ Microsoft/Office/Office 2011 AutoRecovery. Note If you close a file and click Don't Save, the file is deleted from the AutoRecovery folder.

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Just found a blog about fixing corrupt VHDs.
How to Fix a Corrupted Hyper-V VHD File
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How to open a "corrupt" file with Numbers.
With excel it is possible to open such a file with the following error message :
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Yeah that's true to an extant; microsoft did a good job fixing that but unfortunately allowed it to be re-introduced in 2006 with windows vista where they allowed file naming to receive destructive values (wasn't very fond of this);
in previous versions of windows such values once entered would be followed by an error message telling you those values couldn't be used
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(I forgot to mention the period preceded a parenthesis which in turn can be destructive to the file's original format)
Anyway photoshop wont open the file after changing it to .psd leaving an error message stating....
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When I open and close iPhoto I get the wheel of death and I have to force quit the program. Can I reinstall the program to fix any corrupted files?

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You can but it will not fix anything - you have a corrupted library = not an corrupted application
Backup your iPHoto library, depress the option and command keys, launch iPhoto and ftom the resulting first aid window rebuild your database
LN

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The Finder sometimes reports the partially copied file as there and sometimes not.
I have tried to delete the corrupted file but can not.
It returns a variety of error messages depending on how I try and delete it.
I have tried using a Terminal script, I have tried deleting the host folder which is empty otherwise. All attempts fail, reporting either that I do not have permission or that the file is in use (which it is not by anything other than the Finder,) depending on which method I'm trying to use to delete the file.
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I need to try again to copy the entire content of the host folder. I would rather not change the host folder name to avoid the copy operation failing because it can't overwrite the corrupted file. (The original file is still okay).
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Hi Linc. Thanks for the prompt reply. It's really great to have such a resource as this.
I can say with certainty that the file is not locked but I'm afraid my inexperience needs a bit of clarification as to what "ACL" and "Is -Oel" means and how to go about posting its output!
I should also mention that the permissions read, "You have unknown access" and the size is Zero KB. From my experience on a PC I know neither is a good sign <G>.
Thanks again for your continued support.

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Hello,
I have a problem with the Illustrator file I was working on. I cannot open it, and the icon of the file is a bit opaque with a grey cross. If I try to move it, a message says that the file is unavailable. But still is not an empty file. This is the property window:
Also, I stopped working around 01.00, so I don't know why the last access is at 02.36.
Is there any way to recover the information?
Thank you,

It's probably toast, but try this:
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Create a new file and try to place the corrupt file into it.
Try to open it in Acrobat.
Change the extension to .pdf and try to open it in Acrobat and Illustrator.
here's a link you can try:
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For each corrupted file, you will help a customer, and in the process, hopefully improve the overall stability of the product (which has issues) and benefit everyone...
Adobe: If you are afraid that you will be swamped with requests to "Fix my File", then you should probably just get out of the SW business now...

Zak Williamson wrote: "If the documents are fundamentally corrupt in some way, theres no way to repair them." and then later "As I mentioned to Casey, it's rarely possible to repair a truly corrupt document"
I definitely don't want this to sound like a flame or a whine, but I find that statement quite flabbergasting. Somebody at Adobe must understand the format of an InDesign file well enough to be able to edit out the specific element that is causing InDesign to complain about the document. I do file repair for another company (www.qsatoolworks.com) whose file format is probably more complex than an InDesign file. In over 10 years I've only had 1 or 2 files I could not repair at least to the point of recovering the textual data.
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(Naturally, the old hard drive has already been reformatted.)
Knowing what I do about file formats (but understanding that my knowledge is nearly worthless in an InDesign file) I have to assume an InDesign file contains an object map with pointers to the various objects in the document. The idea of telling the customer "your 32 page booklet is lost" when the problem could simply be a screwed up pointer is horrifying to me.
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How to fix a corrupt file on edexcel 2010

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