PST File Still Will Not Open After ScanPST Reported Repair Complete
Repair complete, problem unchanged - the most frustrating screen in Outlook repair. The explanation is simple: ScanPST certifies the file. Outlook needs more than the file.
By Technical AnshuOutlook 2010 to Microsoft 3658 minute read
Watch the video for the repair; this page handles what to do when the repair was not the whole story
ScanPST has declared your PST repaired - perhaps a full scan now reports no errors at all - yet Outlook still throws the same error when you try to open it. This is not a contradiction. ScanPST validates one thing: the internal structure of the file. Outlook opening your mailbox also depends on your profile, your add-ins, the file's location and flags, and locks left behind by crashed sessions. When the file is certified clean and the symptom refuses to move, the efficient move is a split test that tells you in five minutes which side of that line the problem lives on.
Outlook - startup error
Cannot start Microsoft Outlook.
The set of folders cannot be opened. Errors have been detected in the file Outlook.pst.
ScanPST verdict on the same fileNo errors found
ConclusionTest the profile, not the file
Both statements can be true at once: the file is sound and Outlook still cannot open it - because the fault is elsewhere.
1
Repair Complete Does Not Mean Outlook Happy
Think of ScanPST as a structural engineer certifying a building. Outlook is the tenant who also needs the keys, the door, and the corridor lights. A certified file can still fail to open because of:
A damaged Outlook profile - the configuration that points Outlook at your accounts and data files
An add-in crashing Outlook during startup, before the file is ever really read
A read-only flag on the PST, or the file living on a network path Outlook cannot write to
A stale lock from a crashed Outlook session that never released the file
2
The Fresh Profile Split Test
This test changes nothing about your existing setup and answers the question cleanly:
Close Outlook. Open Control Panel, Mail, Show Profiles and click Add - give the new profile a test name
Add your repaired PST to it as a data file (you can skip adding any email account for the test)
Start Outlook choosing the new profile
File opens? The file was fine and your old profile is the disease - keep the new profile, re-add your accounts to it, and carry on
File still refused? The file needs the import route below - or the damage is deeper than ScanPST's certificate suggested
3
Check the Simple Blockers First
Before rebuilding anything, clear the five-second causes:
Right-click the PST, Properties - clear the Read-only attribute if it is set (files copied from DVDs and some backups arrive read-only)
Confirm the file is on a local disk, not a network share or a synced cloud folder
Reboot once - a crashed Outlook process can hold a lock that survives closing the window
Check the file is the one you think it is: same name, plausible size, in the folder your profile points to
4
The Import Route Into a Brand New PST
If the repaired file scans clean but will not behave as a live data file, stop asking it to be one. Make it a source instead:
In your fresh profile, let Outlook create a brand-new PST and set it as the working data file
Go to File, Open and Export, Import/Export, choose Import from another program or file, then Outlook Data File (.pst)
Select the repaired file, choose Do not import duplicates, and import its folders into the new PST
Verify folder by folder - counts, recent mail, old mail, attachments - then retire the repaired file to storage
Importing reads the mail out item by item, which walks around structural quirks that opening the file directly could not.
5
What the Lost and Found Folder Is Telling You
After a repair, check for a folder named Lost and Found in the file. It holds items ScanPST rescued but could not assign to their original folders. Go through it by hand - that mail is yours, just homeless.
The harder reading: if Lost and Found is empty, your scan reports clean, and whole folders are still missing, the repair dropped them. Do not re-repair the same copy hoping for a different result. Go back to your untouched original and try an extraction tool on it - that is exactly the scenario those tools exist for.
Keep the evidence separate: file problem, profile problem, and blocker problem look identical from the error dialog - and have completely different fixes. The fresh-profile test is five minutes and removes all guessing; run it before any deeper surgery.
Watch the Complete Process in the Video
The video covers the repair itself - combine it with this split test and no corrupt PST can hide its real fault from you.
ScanPST says no errors, but Outlook shows the same error as before. Is that a contradiction?
No. ScanPST certifies the file's internal structure only. A corrupt Outlook profile, a crashing add-in, or a read-only flag will still block opening. The fresh profile test separates the causes in about five minutes.
Will importing into a new PST lose my folder structure or rules?
Folders and mail import with their structure intact. Account settings and most rules live in the profile, not the PST, so you set those up fresh in the new profile - treat that as a clean start rather than a loss.
My mail opened in the new profile but some folders are missing. What now?
Look for the Lost and Found folder first - recovered items land there. If whole folders are absent, the repair dropped them; return to your untouched copy and use an extraction tool on it rather than re-repairing the same copy again.
This guide is based on the Technical Anshu video above - if a step gets stuck, ask in the video comments and you will get an answer there.