FIX: Outlook Set of folders cannot be opened. (SOLVED)

This tutorial contains instructions to resolve the following error in Microsoft Outlook: " Cannot start Microsoft Outlook. Cannot open the Outlook window. The set of folders cannot be opened. The server is not available. Contact your administrator if this condition persists".

FIX: Cannot start Outlook. The set of folders cannot be opened

The Outlook "Set of folders cannot be opened" error , may appear in all Outlook versions and occurs when the Outlook PST data file is corrupt. To fix the problem, proceed and repair the Outlook data file, with the instructions below.

How to FIX: The Set of folders cannot be opened in Microsoft Outlook 2013, 2019, 2019.

1. Navigate to Windows Control Panel. To do that:

a. Type "control panel" at the Windows search box
b. Click Control Panel from the results.

control panel


2. Set the View by to Small icons to view all control panel items and then click Mail.

control panel mail options

3. Click the Data Files button.


4. Notice the name and the location of the "Outlook.pst" data file and close all open windows. *

* Note: If you have an Exchange (IMAP account) then you'll see an .OST data file (e.g. "Outlook.ost"). At this case, force Outlook to recreate the corrupted "Outlook .OST file, by doing the following:

1. Click Open File Location.
2. Rename the OST data for the account that is causing the issue (if you have more than one IMAP accounts).
3. Open Outlook to recreate the OST file…


5. Open Windows explorer and locate the scanpst.exe repair tool at this location: *

  • C:\Program Files\Microsoft Office\%OfficeVersion%\SCANPST.EXE

* Note: Below are mentioned the location(s) of the "SCANPST.EXE" file according the installed Office version. If you cannot find the "scanpst.exe" at the above location(s), then look at:

    • C:\Program Files (x86)\Microsoft Office\root\Office16.

Outlook 2013
32-bit Windows > C:\Program Files\Microsoft Office\Office15
64-bit Windows > C:\Program Files (x86)\Microsoft Office\Office15
64-bit Outlook  > C:\Program Files\Microsoft Office\Office15
Click-to-Run  >  C:\Program Files\Microsoft Office 15\root\office15

Outlook 2010

32-bit Windows > C:\Program Files\Microsoft Office\Office14
64-bit Windows > C:\Program Files (x86)\Microsoft Office\Office14
64-bit Outlook >  C:\Program Files\Microsoft Office\Office14

Outlook 2007

32-bit Windows > C:\Program Files\Microsoft Office\Office12
64-bit Windows >  C:\Program Files (x86)\Microsoft Office\Office12

6. Double-click to open the SCANPST.EXE
7. Click Browse.



8. Locate and select the corrupted Outlook data file (e.g. Outlook.pst) and click OK.

9. Press the Scan button and be patient until the Inbox Repair Tool repairs the corrupted file. *

* Note: At final repair phase you will be asked if you want to create a backup. Answer "Yes" to continue the repair operation.

Outlook Inbox Repair Tool


10. When the repair process is completed, open Outlook.

That's all folks! Did it work for you?
Please leave a comment in the comment section below or even better: like and share this blog post in the social networks to help spread the word about this solution.

If this article was useful for you, please consider supporting us by making a donation. Even $1 can a make a huge difference for us.