Written By Amrita Yadav
Updated on December 14th, 2022
Are you finding an issue i.e. Cannot Start Microsoft Outlook? If yes, then read this blog.
In this blog, you will find really working methods to fix the “Cannot start Microsoft Outlook” problem. Also, these methods will help you to have your Outlook up and running again with no errors. These methods work in all versions of Outlook 2019, 2016, 2013, 2010, 2007 and lower and on all systems.
Now, let’s see how you can fix and prevent an even worse scenario when you cannot open Outlook. But, firstly we are starting from the cause and symptoms of this error.
Recover your Outlook using Outlook PST Recovery Tool.
The main symptom of this issue is very obvious and easily recognizable. When you click on Outlook you will find a dialog box appears and is hanging for a while, and then you get the “Cannot start Microsoft outlook. Cannot open the outlook window. The set of folders cannot be opened” error.
Also, there is no exact reason behind this error, but all versions of MS Outlook from 2003 to the newest Outlook 2019 may be affected. Anyway, whatever the reason is, the outcome is the same – you cannot open Outlook. Now the question arises How to fix Cannot Start Microsoft Outlook?. And the solutions to this query are listed below.
Note:- You can follow this technical article to learn about the more common Outlook errors and their fixes.
Now you know reasons what causes “Cannot start Microsoft outlook. Cannot open the outlook window. The set of folders cannot be opened” issue. Therefore, let’s see how one can get them fixed. Below you will find 2 workarounds that fixes the issue.
In most cases it is the corrupted Navigation Pane settings file that restrict Microsoft Outlook from starting successfully, so the first thing you need to do is to recover it. Here’s how you can perform this task:
If you find any difficulty and not able to recover the Navigation pane configuration file, then try to delete the XML file that stores the navigation pane settings. To do this, proceed with the following steps:
If you have reinstalled Microsoft Outlook and something went wrong during the uninstallation of the previous version. Then default Outlook data file PST might be deleted or damaged, that is why you cannot open Outlook. In this scenario, you are likely to get this error: “Cannot start Microsoft Office Outlook. The file Outlook.pst is not a personal folders file.”
Now repair your outlook.pst file using Inbox Repair Tool, aka Scanpst.exe. To do so, execute the steps listed below:
Hopefully, your file got repaired. Now try to open Microsoft Outlook and check whether the “Cannot Start Microsoft Outlook” issue is solved or not. If not then you should try the solution provided below:
Inbox repair tool is an inbuilt tool to repair PST files. Most of the time it repairs the files. But when the corruption is severe then this tool fails. In such scenarios, you need to use PST File Recovery designed by Mailconvertertools. Even a novice user can use this tool and repair their Outlook PST files. It is the best method to recover and repair Outlook PST files and it overcomes all the limitations of the Inbox Repair Tool.
This technical guide is about how to solve “Cannot start Microsoft outlook. Cannot open the outlook window. The set of folders cannot be opened.” The main reasons behind this error are corruption in navigation pane and corruption in the PST file. We have discussed the solution for both the causes. I hope your issue got solved. If there is any issue regarding any step then feel free to contact.
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