Teams Calendar stuck on view with work start day on thursday

Technetdp 1

Dear Community,

The Teams calendar in the App-version of teams starts the view on Thursday.
However in the Web-version the calendar starts on Monday as configured in the settings of the Web-version.
Also in the App-version of Outlook and the Web-version of Outlook the calendar starts on Monday.

We have tried settings all possible languages to ENG-US and then back tot NL-Dutch. But this has no effect on the Calendar in the App-version of Teams. Still locked on startday as Thursday.
We have tried setting the correct settings in Outlook options. this did not resolve the problem.
We have tried setting the correct settings in MS-Teams options. this did not resolve the problem.
We have tried setting the correct settings in Outlook Web-version. this did not resolve the problem.
We have tried setting the correct settings in MS-Teams Web-version. this did not resolve the problem.
We have tried setting the correct settings in Account options in office365. this did not resolve the problem.
We have reinstalled the laptop of the user with a new local profile. This also did not resolve the problem.

Question: What are we missing here? We checked al these settings and we believe there are some invisable settings stored somewhere!

Hopefully someone has found a solution as many technians have investigated this and could not solve this problem. Please help!

Kind Regards,
Technetdp

JimmyYang-MSFT 48,871 Reputation points Microsoft Vendor

2021-10-06T05:48:29.837+00:00

Hi @Technetdp

Have you tried to change another device to see if it can be reproduced?

Does anyone else have the same problem in your organization?

According to your description, it looks like this problem only occurred in Teams client. To solve it, it firstly recommend you try to follow these steps to clear your client cache file to see if it can be fixed:

1.Fully quit Microsoft Teams and ensure it’s not still running in the toolbar at the bottom right of Windows.
2.Navigate to %appdata%/Microsoft/Teams in a File Window.
3.Select everything in the folder.
4.Delete everything.
5.Open Teams and wait for it to download required files.
Technetdp 1 Reputation point

2021-10-06T08:31:32.097+00:00

Hi Jimmy,

Thanks for your reply! I really appreciate it.

I will try to investigate and get back.

We already have found out that this user does not have this problem in our cloud environment where the teams-app also is available. So the solution could be found in version differences.

Kind Regards,
Michel
JimmyYang-MSFT 48,871 Reputation points Microsoft Vendor

2021-10-12T08:40:58.103+00:00

@Technetdp

It has been a while, how is everything going?
If you have any update about this issue, please feel free to post back.
Technetdp 1 Reputation point

2021-10-13T12:50:15.427+00:00
Hi Jimmy!

Thank for following up! I really appreciate it!

The workaround you described did not work. However I have found the solution!!:

I logged on as local administrator on the laptop of this user and Teams fired up. so i got the idea why not try to login here with user credentials.. tried logging in with the credentials of the user and noticed that the calendar started on the correct day (Monday) en corresponds with the workdays set in teams-web and outlook-web!

I figured that maybe local administrator rights might be required to update some data files that otherwise could not be updated. So i gave the user local administrator rights and logged back in under the account. Still the calendar started on Thursday. So maybe some of the files are corrupted. So uninstalled Teams and then I deleted the local profile of this user. Rebooted and reinstalled teams under the user account that now has local admin rights. This worked! Then of course, I took away the local admin rights and the calendar is still on the correct day!!

So the solution for this problem is:

Backup user files

Log in as local admin, uninstall Teams, make user local administrator and delete the local profile, reboot

Log in as the user, install Teams

Log off, log in as local admin, delete local admin rights for this user

Kind Regards,
And thanks again!!!

Michel
Technetdp 1 Reputation point

2021-10-13T14:20:12.613+00:00

Hi Jimmy,

Unfortunately after firering up Outlook. Teams reverted back and starts again with Thursday.
Then i checked Outlook en noticed that first day of the week setting reverted back to Thursday. I set it back to Monday. Repeated the whole procedure of deleting the profile. Whatever i try. Every time as soon as i start Outlook teams start screwing up the Calendar. Also the first day of the week setting in Outlook is Reverted to Thursday!
I does not matter if is change this settings while in cache mode or online mode.
This is the only user experiencing this... So i guess the Azure/Mailboxaccount is corrupt or some kind of delayed weird GPO which decides to block some Teams<>Outlook communications.

I will try to post another update soon.....

Kind Regards,
Michel

1 answer

JimmyYang-MSFT 48,871 Reputation points Microsoft Vendor

2021-10-19T07:16:17.653+00:00
Hi @Technetdp

Thanks for sharing your test process of your problem.

Have you tried to change time zone to the correct setting in Outlook Web App? To complete it:

Sign in to Outlook Web App, click Settings (), and then click View all Outlook settings at the bottom of the settings panel. (If you are using an older version, click on Mail under App Settings)

In the Settings window, click General, and then click Language and Time. (Region and time zone in older version.)

In the Current time zone box, click the arrow, and then click the correct time zone setting.

Click Save.
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JimmyYang-MSFT 48,871 Reputation points Microsoft Vendor

2021-10-22T09:28:32.197+00:00

@Technetdp

It has been a while, how is everything going?
If you have any update about this issue, please feel free to post back.

Technetdp 1 Reputation point

2021-10-28T13:18:49.04+00:00

Hi Jimmy,

I did check the time settings mentioned by you, but these were also correctly configured.

Since this problem was not bothering the user we have decided to give it up for now.

My best guess is that it's related to a old Windows 10 Build version and Outlook 2016.

I will mark your last answer as the solution. Because it has to do something with these settings related.

Kind Regards,
Michel

JimmyYang-MSFT 48,871 Reputation points Microsoft Vendor

2021-10-29T07:00:38.863+00:00

@Technetdp

No problem. If you have any questions on this issue, please feel free to contact with us!
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