MS EXCEL 2000 corrupted workbooks/worksheets

Without seeing the file, it is difficult to diagnose what is going on, but I will offer some ideas.

What version of Excel are you using? Are you using Excel 2003? Was the file you are trying to open created in Excel 2007 or Excel 2010. If so, it might be using the new format and therefore will not open in Excel 2003 and older.

It is possible the Excel file is data that was imported from a source in which Excel cannot import. Does the Excel spreadsheet contain any imported data?
Try to use: XLSX Viewer Tool here : http://www.xlsx.viewertool.com/
Those are the most likely causes of the corrupt data. Is every file you open in Excel corrupt, or just this one workbook? If it is just this one workbook, then, yes, it sounds like it is corrupted. If every file you open with Excel is corrupt, then your version of Excel could be corrupt, but that is unlikely.

I came across this issue today. An update to the Office Compatibility Pack that was still on a computer caused the default PROGRAM for .docx and .xlsx files to be the Microsoft Open XML Converter program and make the "Default Programs" in Control Panel think that Excel and Word were actually the Microsoft Open XML Converter scholarship essay writing assistance program as well.UNINSTALLING the Office Compatibility Pack in Programs and Features and then a simple reboot fixed the issue.
Also:
1: Try to repair it manually when MS Excel does not automatically STARTS File recovery mode.
Click the Microsoft Office Button, and then click OPEN.
Now select the corrupted workbook that you want to open.
Click the arrow NEXT to the Open button, and then click Open and Repair.
Choose either Repair (to recover as much of the FILE data) or Extract data (to extract values and formula when repair process is not successful).
2: Open with Open Office: Try to open your Excel file in Open Office. It is an open-source Office suite that is able to open & SAVE Microsoft Excel files.
3: Save in HTML Format: Open your Excel file and save it in HTML format. By saving the workbook in HTML format, you may be able to filter out the corrupted elements.
4: Save in SYLK Format: Open your Excel file and save it in SYLK format. By saving the workbook in SYLK format, you may be able to filter out the corrupted elements.
5: Try 3rd party software like Excel Repair Toolbox
link: https://www.repairtoolbox.com/excelrepair.html

Excel file can be repaired manually if it is less corrupted but Open and Repair program doesn't work if highly damaged due to corruptions. I searched for solutions to repair corrupt Excel file and found one solution which is full of information and provides a guaranteed solution. I am sharing this solution with all the users -Excel Repair Toolbox. Follow the exact steps given in this programm and you will be able to access the data. Download Microsoft Excel Repair tool

MS Excel File can get corrupted due to virus attack, missing MS office files, power failure and other possible reason that can be fixed by only use Stellar Phoenix Excel Recovery fix corrupt Excel (.XLS/.XLSX) files and restore everything (including charts, chartsheets, cell comments, worksheet properties etc.

1 - Using "Open and repair"

Microsoft Excel has a built-in repair tool for corrupted files. To access it, go to File and Open. A menu will pop up in which you'll have to select the file you want to fix and then choose "Open and repair" from the dropdown menu. This will open a dialogue box in which you can pick between the repair option (which will recover as much information as possible) and the extract option (that will copy values and formulas). The two alternatives combined should work fine to save your work.

2 - Saving the file to a different format

If you can open the file but you can't modify it or save the changes, you should use this method. You'll have to save the file to a different format (such as SYLK or HTML) via the "Save as" menu. Once you've done this, you'll have to open the recently saved file and then save it once again (but this time, you'll have to choose the Excel Workbook as the format). By doing this, you'll be creating a fresh new file with all the data from the corrupted file.

3 - Opening the file in Microsoft Word

This option is only available for the people that have the Microsoft Excel converter installed on their PC (it can be downloaded from the Microsoft website). You simply have to open the corrupted Excel file with Word. However, you should know that this method only works for retrieving data (all the structures from the sheet will be gone, such as formulas and macros).

4 - Altering the Calculation option

If your file isn't opening at all you can try to adjust the calculation option. Simply open Excel in a blank workbook, go to the "Tools" menu and look for "Options". There you'll find the "Calculation" tab in which you'll have to look for the "Calculation" section and set it to "Manual". Click OK and then try to open the corrupted file once again.

5 - Linking the corrupted file

In this method, you'll have to link one cell of a blank worksheet to the corrupted workbook. Be sure to create the new worksheet in the same location as the corrupted file. Once you've done this go to the blank worksheet and enter the following in the A1 cell: <Filename>!A1. This will copy the data from the A1 cell of the corrupted file to the new sheet. In case it works, simply click "Edit" on the cell and select an area like the one covers the cell that contain data in the damaged file, and then click Paste. Then (and with the cells still selected) click Copy on the Edit menu.

Lost Excel file can be recovered from:

1. Recycle Bin - If you have deleted the file with normal delete.
   
2. Backup - If have maintained the backup of file.
   
3. Email - It may possible that you have mailed the file to someone.
   
4. 3rd Party Recovery Software - Recuva, Stellar Data Recovery ...
   

A workbook is a spreadsheet file. By default, each workbook in Excel contains three pages or worksheet

The term spreadsheet is often used to refer to a workbook, when in actual fact, spreadsheet refers to the computer program, such as Excel.

So, strictly speaking, when you open the Excel spreadsheet program it loads an empty workbook file consisting of three blank worksheets for you to use.

I do not think that works contains tabs. Microsoft Excel which is part of the office suite has what is known as a workbook and each workbook has individual worksheets that contain tabs along the bottom of the workbook. You can add new tabs there by right clicking and selecting insert and then select worksheet. You can also rename the tab with the right click option as well. These instructions are for microsoft excel 2003.

Try this:
1. Find the copy of the workbook on which you will merge the changes. In Excel, go to "File > Open" and find the file.
3. Click "Tools > Compare" and "Merge Workbooks." 4. Look for the files you want to merge and add them into the current file. 5. Click “OK” to merge the files. This is your master copy of this workbook. 6. Save the file.

If you mean that you can open the Workbook and read the Worksheet - then all you have to do is select all and paste it to another Worksheet. This will allow for changes of formulas etc.

If you mean the whole Workbook - then I dunno.

In future, either use the same password for everything (easy to remember) or Protect the work with nothing entered into the password field (leave this blank). This last will protect the work from people who try to guess your password, but will be easy for you to remember - eg every password is left blank.

If you must use unique passwords, then keep a record of them somewhere other than on your computer.

Sorry I can't help with the "Workbook" solution - but somebody else out ther may be able to do so.