I accidentally lost access to an Outlook PST file on my computer after moving some folders, and now my emails and contacts are missing. I need help figuring out how to recover the PST file safely because it has important work messages and personal data I can’t afford to lose.
Missing PST File, What I Checked First
Losing a PST file feels bad fast. I’ve had Outlook open like nothing happened, then I noticed every folder I cared about was gone. If your PST vanished, stop using the PC for normal stuff right now. Deleted files often stay on disk for a while. Windows marks the space as free, then overwrites it later. Every download, browser tab, or random save cuts into your odds.
Start with the obvious stuff
I know this part sounds too simple, but I’d still do it first.
Check the Recycle Bin. Search for the PST by name if you remember it. If you deleted it with the normal Delete key, it might still be sitting there. If you used Shift+Delete, skip this part.
Then check any sync service tied to the folder. OneDrive, Dropbox, whatever you use. Open the web version, not only the local app. Look in deleted files and version history. I’ve seen a file disappear locally while the cloud copy was still recoverable.
Try Windows previous versions
Sometimes Windows kept an older snapshot and never bothered to tell you.
Go to the folder where the Outlook data file used to live. Common path:
C:\Users\YourName\Documents\Outlook Files
Right-click the folder. Pick ‘Restore previous versions.’ If you see a version from before the file went missing, open it and copy the PST out to somewhere safe.
Not the same folder. Put it somewhere else first.
If it still isn’t there, use recovery software
At this point I’d assume Windows sees the file as deleted. This is where recovery tools matter.
Disk Drill gets used a lot for this because it scans for deleted files, including PST files no longer visible in File Explorer.
What I’d do:
- Install it on a different drive if you have one
- Scan the main drive, usually C:
- Search for *.pst or filter by PST
- Compare file sizes before restoring anything
- Recover the best candidate to another location
Size matters here. A fresh Outlook data file might be tiny. Your old real mailbox file might be 500 MB, 2 GB, or more. Don’t grab the first result and assume you won.
Outlook might have made a blank replacement
This part trips people up.
If Outlook lost the old PST, it may have built a new empty one so the profile still opens. It looks normal at first glance, then you notice the inbox is bare and your archive folders are missing.
If you recovered the old PST, open it manually in Outlook:
File > Open & Export > Open Outlook Data File
Pick the recovered file from the place where you saved it. If it opened cleanly, you should see your old folder tree in the sidebar. Then go into Account Settings and switch the recovered PST to the default data file if needed.
I wouldn’t delete the newer blank file yet. Keep it there until you confirm your old mail, contacts, and folders are all back.
If your mail account used IMAP, you still might be okay
If the account was IMAP, the mail on the server often survives this mess. Re-adding the account usually builds a new OST file and syncs the mailbox back down.
Still, don’t count on it for everything.
Stuff stored only on your PC might be gone from server sync, including:
- local archive folders
- personal folders
- rules
- mail dragged into local-only storage
Those items were often sitting in the deleted PST. IMAP won’t pull them back if they never lived on the server.
After recovery, back up the file
Once you get the PST back, make a copy somewhere reliable. I’d put it in a folder your backup system covers, then copy it to an external drive too. Outlook doesn’t do a great job warning you how fragile this setup is.
Also, if the recovered PST is large, take that as a decent sign. Open it in Outlook and verify the contents before replacing or removing anything else.
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If you moved folders, I would check one thing before file recovery. Outlook often still points to the old path, even when the PST is sitting fine in a new folder.
Do this.
Open Outlook.
Go to File, Account Settings, Data Files.
Look at the full path for the missing PST.
If the path is broken, remove the bad entry, then browse to the moved PST and attach it again.
Also search Windows for:
*.pst
Sort by Date Modified and Size. Large PST files are the ones worth checking first. A real mail archive is often hundreds of MB or more. A 265 KB PST is usally a new empty file.
I partly disagree with @mikeappsreviewer on jumping fast into recovery mode. If the file was moved, not deleted, recovery software is step two, not step one. First confirm it is not in:
C:\Users\YourName\AppData\Local\Microsoft\Outlook
C:\Users\YourName\Documents\Outlook Files
If you do find the file but Outlook says it is damaged, run Inbox Repair Tool, scanpst.exe. Common locations:
C:\Program Files\Microsoft Office\root\Office16
C:\Program Files (x86)\Microsoft Office\root\Office16\
Make a copy of the PST first, then repair the copy.
If the file is gone, Disk Drill is a solid pick for Outlook PST file recovery. Recover the PST to a different drive, not back onto C:. Then test it in Outlook with Open Outlook Data File.
Also worth a read for Outlook PST file recovery steps on Microsoft Answers:
Outlook PST recovery help for deleted or missing email files
One more thing people miss. If you had AutoArchive on, Outlook might have stored older mail in a second PST, so check for more than one file. Thats where missing contacts or old mail sometimes went.
If you moved folders, I’d actually check Outlook’s profile before doing anything heavy. @mikeappsreviewer covered deletion/recovery angles and @viajantedoceu mentioned the path issue, but one extra place people forget is the Mail profile in Control Panel, not just inside Outlook.
Try this:
- Close Outlook fully
- Open Control Panel > Mail > Data Files
- See whether the PST is still listed there with an old location
- If yes, note the path, then use File Explorer search for the exact filename
Also check whether the PST got renamed during the move. Outlook can be weirdly dumb about that stuff.
Another thing: if Contacts are missing too, export/import is not the issue. That usually means Outlook is opening the wrong data file, not that the data vanished. In Outlook, look for Contacts properties and confirm that folder belongs to the intended PST.
If the file is found but won’t mount, copy it first and then use scanpst.exe on the copy only. If the file is truly gone, then yeah, Disk Drill is a practical option for PST file recovery on Windows because you can scan for larger deleted Outlook data files and restore them somewhere else.
For picking a safe PST recovery software for Outlook files, this video is worth a look:
watch how to recover a missing Outlook PST file
One small disagreement with both of them: don’t keep opening Outlook over and over while testing. It can create new blank data files and make the mess more confusing real fast. Kinda annoying, but very Outlook-ish tbh.
One angle I’d add that @viajantedoceu, @yozora, and @mikeappsreviewer only touched indirectly: check whether the PST was moved into a folder your account no longer has permission to read.
Right click the found PST > Properties > Security. If your Windows user lost access after the move, Outlook can act like the file is missing when it’s really just blocked. Also check Properties > General for a read-only flag.
Another thing I slightly disagree on: I would not rush to repair a PST if it was copied through a flaky USB drive or network share. First copy it locally to the desktop or another internal folder, then test opening that copy. A lot of “corruption” is just a bad path or permissions problem.
If the file truly vanished, then use Disk Drill.
Pros:
- good at finding deleted PST files by signature and filename
- preview and size info help identify the real archive
- simple enough for non-experts
Cons:
- recovery quality depends on whether the sectors were overwritten
- best features may require the paid version
- can return multiple PST candidates, which gets messy
One more check: Outlook sometimes keeps Contacts in a different default data file than Mail. In People/Contacts, verify which data store is actually active. That can make it look like everything disappeared when only the default store changed.