Lost a "Saved" file that I worked on from an email attachment

You may or may not be able to recover this document since the changes are saved in your Temporary Internet Files folder. Note that you can't just open your Temporary Internet Files folder directly and find it due to the way Windows handles your Temporary Internet files but if it's still available, here's how you can get it back:

Word 2010-2016

1. Open another Word document sent to you as an attachment from an email. If you don't have one, send an email with an attachment to yourself. (While you should be able to open the same email attachment since another copy of the file is created in your Temporary Internet Files folder, I don't like taking a chance like that.)
2. Click File, and then click Info.
3. At the top, below the name of the file, locate the document path. It will be similar to the path shown in the screenshot at the bottom of this post next to E-mail attachment.
4. Click in the path (after you click in that area, it will turn into a text box) and select only the file path, as shown in the screenshot.
5. Press Ctrl + C to copy it.
6. Press the Windows Key + E to open the File Explorer. (Or use an alternate method to open it)
7. Paste the copied file path in the Address bar (Ctrl + V) and press Enter.

These above steps should put you either in the same location as your revised file or near it. You may need to dig around in other folders to locate the file.

Word 2007

1. Open another Word document sent to you as an attachment from an email. If you don't have one, send an email with an attachment to yourself. (While you should be able to open the same email attachement since another copy of the file is created in your Temporary Internet Files folder, I don't like taking a chance like that.)
2. Click the Office Button, point at Prepare, and then click Properties. The Properties pane will display below the Ribbon.
3. On the far right of the Properties pane you'll see a file path and the document name. Select only the file path and press Ctrl + C to copy it.
4. Press the WinKey + E to open the Windows Explorer. (Or use an alternate method to open it)
5. Paste the copied file path in the Address bar and press Enter.

These steps should put you either in the same location as your revised file or near it. You may need to dig around in other folders to locate it.

Note that if you're not using Word 2007 then please let us know the version of Word you are using so that we can provide the necessary steps. For previous versions, to find your version of Word, click Help and then click About Microsoft Word.

Did you try the steps in the solution? To recap and update the instructions for Word 2016:

1. Open another Word document sent to you as an attachment from an email. If you don't have one, send an email with an attachment to yourself. (While you should be able to open the same email attachment since another copy of the file is created in your Temporary Internet Files folder, I don't like taking a chance like that.)
2. Click File, and then click Info.
3. At the top, below the name of the file, locate the document path. It will be similar to the path shown in the screenshot at the bottom of this post next to E-mail attachment.
4. Click in the path (after you click in that area, it will turn into a text box) and select only the file path, as shown in the screenshot.
5. Press Ctrl + C to copy it.
6. Press the Windows Key + E to open the File Explorer. (Or use an alternate method to open it)
7. Paste the copied file path in the Address bar (Ctrl + V) and press Enter.

These above steps should put you either in the same location as your revised file or near it. You may need to dig around in other folders to locate the file.