Outlook users getting error “Cannot start Microsoft Outlook. Cannot open the Outlook window. The set of folders cannot be opened. The operation failed.” usually indicates that the outlook data file, where outlook has all the information stored cannot be opened. Before going through the steps listed below, make sure that you are not running any back up software’s that is supposed to backup the data file, because if the
file is in use, then Outlook will not be able to access the file. Secondly, make sure that the file has not been moved from it’s original location. Add-in’s can also interrupt Outlook from accessing the data file. Method 1: Reset Navigation PaneIn this solution, we will reset the navigation pane settings in Outlook. Close all applications.
Method 2: Start Outlook in Safe Mode
ABBYY FineReader, Broadcom Send-to-Bluetooth Intel Send-to-Bluetooth KingSoft’s PowerWord. Method 3: Repair Outlook Data FileOutlook stores data in data files, these files can be corrupted. Luckily, Outlook provides a tool called scanpst to scan and repair these files. Method 4: Enabling cached exchange modeThis method is applicable to exchange users only.
Method 5: Disabling Lync at StartupLync is a business version of the Skype application. Often, it interferes with important elements of the Outlook application. Therefore, in this step, we will be disabling Lync at startup and open Outlook again. For that:
If nothing works, then follow Method 3 until the ost or pst file reports no errors and then add a new profile. Once done, import your ost/pst file back into Outlook. Before importing, set up your account in Outlook and if you are missing messages or contacts, then import.
Kamil is a certified MCITP, CCNA (W), CCNA (S) and a former British Computer Society Member with over 9 years of experience Configuring, Deploying and Managing Switches, Firewalls and Domain Controllers also an old-school still active on FreeNode. Can not start Microsoft Outlook set of folders can not be opened?If your old Outlook PST file was severely damaged and the repair procedure was not successful, you may get "Cannot start Microsoft Outlook. The set of folders cannot be opened" error again. If this case, the only way is to create a new profile and use it without importing data from the old . pst file.
Why can't I access my folders in Outlook?If the Folder Pane is minimized, you won't be able to see your folders. There are two ways you can view the Folder Pane. Expand the Folder Pane by clicking the > on the left side of the screen. Click View > Folder Pane > Normal.
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