Member Avatar for KocsisNora

Lady and gentlemen I want to ask you. I have the document in OneNote 2007, but there is a problem, I can't open it cause of - This file does not appear to be a OneNote file. This message has appeared today at opening it. Yesterday the document was valid.

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Short, practical recovery checklist for (building on and ): make a byte-for-byte copy of the .one file(s) right now and never work on the original. Many simple fixes work on copies; experimenting on the original risks making recovery impossible. As warned, avoid unknown “document repair” utilities or sketchy download sites — they often do more harm than good.

Try these steps in order:

  • Copy the problem .one file to a safe folder on your local drive (do not run tools against the version on a USB, network share, or synced folder).
  • Inspect the copied file’s size and last-modified timestamp. If it’s 0 KB or tiny, look for other copies (Recycle Bin, external backups).
  • Check Windows “Previous versions” / File History for the folder where the notebook lived and restore an earlier version if available. (support.microsoft.com)
  • Check OneNote’s automatic backups (open OneNote options and look for Save & Backup) and the local backup folder; OneNote keeps backups under your profile (versioned folder like ...\AppData\Local\Microsoft\OneNote\<version>\Backup). If backups exist, copy them out and open those copies in OneNote. (learn.microsoft.com)
  • If the notebook was in OneDrive, check OneDrive’s Version History online and restore an earlier version from there. (support.microsoft.com)
  • If OneNote itself behaves oddly, force it to rebuild its cache: close OneNote, rename or move the OneNoteOfflineCache.onecache file in your OneNote AppData folder (or start OneNote with the safe-boot switch onenote.exe /safeboot and choose the clear-cache option). This can fix cache-corruption errors without touching the original .one files. (learn.microsoft.com)

If none of the above recovers readable data, collect three things before asking for paid help: a copy of the original .one, any .one files from the Backup folder, and a copy of the cache file. That makes professional recovery or Microsoft support far more likely to succeed. Finally, once recovered, set up regular backups (File History, OneDrive with versioning, or external backups) so a single corrupted file can’t block access again.

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Member Avatar for rproffitt

Time to put it on Google Docs.

But first you are likely to get replies by SCUM that SPAM document repair tools. Hey, if you fall for that, your wallet.

We don't need to open the doc in OpenNote as noted at http://smallbusiness.chron.com/save-onenote-google-docs-53952.html but the second half is all I ever needed.

Member Avatar for rproffitt

@Is, that download.com tends to almost always install toolbars, adverts and more. I no longer go near that site.

commented: What The Proffitt said :-) +16
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