Fix: Outlook Error “The set of folders cannot be opened”. 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.
Press Windows + R keys to launch the Run utility. Type appdata in the input field and press ENTER. In the App. Data folder that opens, go to Local > Microsoft > Outlook. Open the Outlook folder as per your Outlook version.
How to fix Microsoft Outlook cannot start issue?
Corrupt XML files in Outlook directory can also be a reason why you cannot start Microsoft Outlook. You can remove these files to fix the problem. To do that, follow these steps: Press Windows + R keys to launch the Run utility. Type appdata in the input field and press ENTER.
“Cannot start Microsoft Outlook. Cannot open the Outlook Window. The set of folders cannot be opened. The attempt to log on to Microsoft Exchange has failed.” 1. Create new Outlook Profile – Tried several times and still won’t open 3. Run the resetnavpane command – did not fix the problem 4.
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.
Restart Choose Start> Run, and in the Openbox, type Outlook. Note: If the program loads properly, it’s likely that one of your add-ins is the source of the error and you need to identify which one. To determine which add-in is the problem, enable one add-in at a time.
As a result, you may encounter the ‘cannot open the Outlook window’ issue. You can run Outlook in safe mode to confirm if the problem is caused by add-ins. Follow these steps: Launch the Run tool by pressing Windows + R keys. Enter Outlook /safe in the input field and press the OK button. Select your Outlook profile and click OK.
How to fix outlook not opening in safe mode?
Create new Outlook Profile – Tried several times and still won’t open 3. Run the resetnavpane command – did not fix the problem 4. Disable Exchange cached mode – No difference 5. Repair Outlook Data File – No data file to repair as Outlook never opened to create one.
What does “the set of folders cannot be opened” mean?
The set of folders cannot be opened.” is one of the most problematic Outlook errors. It’s because this error prevents you from accessing your mailbox. That said, you can easily fix this error by applying the methods mentioned in this post.