FIXED: 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

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

Launching PowerShell for Exchange Online in Edge

Internal Links

Found priceless insights in this blog? Support the author’s creativity – buy them a coffee!