Cannot start microsoft outlook. Cannot open the outlook window. The set of folder cannot be opened . The calendar folder cannot be found.

Question

Cannot start microsoft outlook. Cannot open the outlook window. The set of folder cannot be opened . The calendar folder cannot be found.

Answer 1

Dear Iknwan Izahar,

Thanks for your update. We are so glad to hear that everything works now.

Meanwhile, if possible, please feel free to vote the solution to benefit other community members to locate here in the quickest way. 

We would highly appreciate your efforts and time here.

Again, please do take care during the COVIN-19. 

Cheers,

Rudy

Answer 2

Hello Ikhwan Izahar,

Greetings.

From your description, please use the Outlook on the web for temporary usage.

For this case, can we know what had you done before this issue occurred please? Like updated the Outlook client or updated the Windows OS, and so on.

In this situation, please go to Control panel > Mail (32/64-bit) > Show profiles > Add… button to create a new Outlook profile, then under "When starting Microsoft Outlook, use this profile: " section > select Prompt for a profile to be used option to restart Outlook.  Please be noted: don't remove any older profile before everything works.

Feel free to let us know how it goes.

Meanwhile, you also can try repairing the Outlook data file to check this issue. Noted: before you repair it, you need to copy-paste that data file firstly to backup. 

Also, let us know the detailed Outlook client version. We can get it from other Office applications.

Take care.

Regards,

Rudy

Answer 3

I had the same issue and none of the suggestions I found online worked.

The following did NOT work:

• Running Outlook in safe mode
• Disabling all startup programs and non-ms services via msconfig.exe
• Repairing pst with scanpst.exe
• Adding a new mail profile
• I even uninstalled and reinstalled MSOffice and the error persisted.

Finally, what worked:

• Deleted ALL profiles, restarted, and created a profile from scratch.

I hope this works for you.

Answer 4

Hello Rudy,

I didn't know what is the cause for this issue, either windows update/or delete few email regarding reminders for meeting... Yesterday, I shut down my PC normally, and today when I want to start checking my email, it stated that kind of error. At this moment your suggestion ( In this situation, please go to Control panel >Mail (32/64-bit) > Show profiles >Add… button to create a new Outlook profile, then under "When starting Microsoft Outlook, use this profile: " section > select Prompt for a profile to be used option to restart Outlook.  Please be noted: don't remove any older profile before everything works. ) really works. Thank you very much for your kind assistant.