FIXED: Unable to add calendar permissions due to Basic Authentication disabled

Unable to add calendar permissions due to Basic Authentication disabled

Issue / Fault definition

When attempting to add calendar permissions using PowerShell and this article you are unable to add calendar permissions due to Basic Authentication disabled.

Impact

Office 365

Known / associated error messages

2022 04 07 10 35 40 Administrator Windows PowerShell ISE
2022 04 06 14 26 09 Administrator Windows PowerShell 1

Known Fixes / Solutions

The fix was two fold for me, using the browser version of PowerShell for Exchange Online in Edge and enabling Basic Authentication via Regedit.

Strangely, enabling Basic Authentication and using the built in version of PowerShell didn’t work.

Enabling Basic Auth via Regedit

Edit the AllowBasic DWord from 0 to 1

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WinRM\Client

2022 04 07 10 51 14 Registry Editor

Launching PowerShell for Exchange Online in Edge

2022 04 07 10 50 23 Active users Microsoft 365 admin center and 3 more pages InPrivate Micro
Login to Office 365 Admin Center and Click Exchange
2022 04 07 10 50 32 Welcome Microsoft Exchange and 1 more page InPrivate Microsoft​ Edge
Click Hybrid
2022 04 07 10 50 37 setup Microsoft Exchange and 1 more page InPrivate Microsoft​ Edge
Click configure to launch PowerShell
2022 04 07 10 50 45 Untitled and 2 more pages InPrivate Microsoft​ Edge
Allow the application to launch, you may need to click Install
2022 04 07 10 51 01 Untitled and 2 more pages InPrivate Microsoft​ Edge
PowerShell will then launch, you can now use the article below

https://www.theictguy.co.uk/office-365-calendar-permissions/

Internal Links

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