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Updated On - 22 Jul 2022 | Read time 10 minutes Organizations and individuals widely use Outlook as their email client, owing to its simplicity and integration with MS Office and other Microsoft products. Also, it provides Exchange connectivity, which is helpful for enterprise-level email communication. Though it is a popular email client, users often face many errors while using it. However, amongst many errors, the most frequent error faced by them is “The set of folders cannot be opened.” This error often becomes an obstacle for users in accessing their Outlook emails and messages. The actual reason behind this annoying error is not known yet, as it could appear due to improper setup of Outlook on your system or corrupt PST file linked with the Outlook account. Also, there is no direct solution to solve this error. But we have figured out some methods that can address this issue effectively. So, let’s have a closure look at each of these methods. Note: Before using any of these methods, make sure you close the Outlook application on your system from the background as well.
Now, restart Outlook and check if the same error occurs again or not. However, if you still face the same problem, then try other methods. ConclusionIf you are unable to fix the PST errors with the manual methods like ScanPST, then use Kernel for Outlook PST tool. It helps you recover Outlook PST data and save to PST files, Exchange Server, Microsoft 365, Gmail, etc. You can use this tool to fix Outlook errors, PST file corruption, etc. in any version of Outlook. More Information
How do you fix Cannot start Microsoft Outlook Cannot open Outlook window the set of folders Cannot be opened the attempt to log on to Microsoft Exchange has failed?5 Fast Tips to Fix "Cannot Start Microsoft Outlook" Error. 1 Turn off Compatibility Mode. ... . 2 Start Outlook in Safe Mode. ... . 3 Recover Navigation Pane configuration file. ... . 4 Repair your Outlook PST file using an Inbox Repair tool. ... . 5 Create a new Outlook profile and import data from the old PST file.. How do you fix Cannot expand the folder the set of folders Cannot be opened the attempt to log on to Microsoft Exchange has failed?Following are a few effective solutions to fix the error “Outlook the set of folders cannot be opened” are as follows:. Launch Outlook in Safe Mode.. Update the Outlook application.. Recreate your Outlook Profile.. Turn off Compatibility mode in Outlook.. Repair Office Installation.. Fix Outlook.. Repair PST Using ScanPST Tool.. Can not start Microsoft Office Outlook Cannot open the Outlook window?Run in safe mode Some Add-ins or custom items also may cause your issue, please try to restart your Outlook in safe mode(Windows +R>type "Outlook.exe /safe">enter) Repair your data file If your issue still exists, it may be related to your corrupted data file, please try to repair it to test.
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