- Repair of shared folders (.PST)
is a program which repairs Outlook data files by exporting
it to a new file, ignoring any error. It requires that the
data file can still be opened in Outlook. Exporting a file
also makes it much faster however you need to repair links,
afterwards using OLfix.
You will use first SCANPST to repair a
damaged file, if this does not help, you can use the export
function in Outlook. However MS products like to abort any
copy operation after the first error. CopyPST ignores all
errors and therefore is able to copy the whole file.
CopyPST is free of charge available under
the following address:
The PST file is normally found at
and settings\Username\Lokale Local settings\Application
This is invisible for explorer, until you
modify the view options to include hidden files and folders.
You should back up your pst file regularly because sometimes
errors can not be recovered.
Outlook Repair with SCANPST
With the installation of MS Outlook a repair
program is also installed: SCANPST.EXE. You can find it
in c:\program files\common
files\system\mapi\1033 (or similar). In order to start it,
open the directory in explorer, start SCANPST and select
the data file to be scanned.
The easiest way to get the complete path
of the data file is to use Control Panel/Mail or Outlook
and open the property page of the data file. In Outlook
you can find the property page at the root folder, then
click on advanced properties.
This path can be copied directly from SCANPST:
If you are with Explorer in
files\system\mapi\ and see SCANPST.EXE you may want to drop
it to the start button for later use.
Now enter, select or paste the path of
your data file and close Outlook before you press Start.
Sometimes SCANPST does not help:
SCANPST aborts with a message similar
to: "SCANPST encountered an error, the file is not modified".
Each time you start SCANPST it will advance a bit further
(seems that the file is modified anyway..) Many times
performing this may sometimes repair your file.an e
After SCANPST terminated, the file
still has errors.
You need to re-scan with SCANPST after it has completed,
if there are still errors you need to copy the data
SCANPST does not read the file, nor
You need a different repair program. You can find some
of them at the top and the end of this article.
CopyPST: Repair using copy
If SCANPST does not repair the file, one
solution is to copy the file, for example exporting it to
a new file using Outlook. However Outlook (like Windows)
will abort copying if any error occurs. You will left with
a half copied file and do not know which elements are missing.
CopyPST solves this problem by ignoring
typical errors during the copy of a file. If the error which
comes while reading an element is not too fatal (sometimes
the program is aborted by reading an element, sometimes
the system hangs if the sector can not be read from the
hard disk and sometimes we get up to blue screens), CopyPST
can ignore the error and just copy the next element. You
will receive a report which element could not be read.
If the program stops responding, just wait,
sometimes reading half defect files can take lots of time
especially if your hard disk is damaged.
In order to use CopyPST, create a new PST
file in Outlook and name it differently (if you end up with
two "Personal Folders" it is difficult to select the file).
Now start CopyPST and select the data files
and options then press start.
You can see the new file growing while the
process is going, also you can see progress in CopyPST.
Next, use the
new file instead of the old one. You may burn the old one
to a CD, rename it or just delete it after you have check
that all elements are existing. We recommend renaming and
leaving it a few days or weeks on your hard disk, at least
check if the number of elements is the same in all folders.
can not copied:
Rules and links
will not be corrected using the copy process. All rules
and links will point still to the old file. If you do not
remove or rename the old file, you will not discover that
links and rules are not modified. Everything will work normally,
except that emails moved by a rule a afterwards in a different
Sample of a link:
This appointment contains a link to a contact.
Without modifying the link with
OLfix it will point to
the old file. Outlook will open the old file in hidden mode
if you open the contact link. All modifications you make
on the contact go to a different file!
With Outlook until 2002
files can grow at maximum 2 GB (that is 2^31, the size of
an 32 bit signed integer), if you write more data into it
you can no longer open or read the file (technically speaking,
the signed integer used to store byte positions in the file
will get a negative integer if the file size grows after
2 GB, this causes internal errors). However you can write,
and write and write, if you try to read elements, Outlook
will crash, if you re-open Outlook it will not open.
- To solve the problem,
we need to cut the file at the 2 GB limit using PST2GB,
Microsoft is offering this tool in Q296088 (www.microsoft.com)
- After this, all new data
(which is stored after 2 GB) is lost, but the rest can be
recovered with SCANPST.
- Newer versions of Outlook,
if you have the latest service pack, will no long allow
write operations if the file is about 1.7 GB in size.
Remark: You can extract
all attachments from a file using tools, for example with
There are some commercial
programs which repair PST files and hard disks.
Stellar Phoenix PST Repair (Neu)
Commercial office repair kit 102€.
Easy Recovery File Repair:
office repair kit, 199 US$.
Service for repairing lost
about $699 per file.
COPYRIGHT und TRADEMARK
Microsoft und Outlook
und/or other Microsoft products are registered trade marks
of Microsoft Microsoft Corporation in the U.S and other
countries. All other trade marks are owned by the manufacturers
of the products.
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