Keep getting pop up for Microsoft SharePoint wants to use your confidential information stored in "adalchche" in your keychain

Hi sharyn1977,

Thank you for contacting Apple Support Communities. Based on what you stated, it seems like there is trouble with a keychain and an app. Try looking for a Microsoft SharePoint keychain and remove it and restart and test again to see if the issue persists.

"Delete a keychain

1. In the Keychain Access app  on your Mac, if your keychains aren’t visible, choose Window > Keychain Access.
2. Select a keychain in the Keychains list.
3. Choose File > Delete Keychain [keychain name].
4. Click Delete References."

"Important: If you delete a keychain’s References and Files, all the information in the keychain is deleted. However, if you know the keychain’s password, you can recover the information."

Delete a keychain in Keychain Access on Mac - Apple Support

Please don't hesitate to let us know if you need additional assistance.

Cheers.