Fix Credential Manager Error 0x80090345 [Solution]

Fix Credential Manager Error 0x80090345 [Solution]

Registry Path:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography\Protect\Providers\df9d8cd0-1501-11d1-8c7a-00c04fc297eb

If you are getting error code 0x80090345 along with an error message saying The requested operation cannot be completed, while accessing the Credential Manager, follow these suggestions to resolve the issue. This problem occurs when you do not have the ProtectionPolicy REG_DWORD value, or the Value data of this REG_DWORD value is set to 0. This tutorial explains how you can set things up correctly to bypass the aforementioned error.

Issues addressed in this tutorial:
credential manager error delegation
credential manager error
credential manager an error occurred
credential manager an error occurred while performing this action
credential manager error the parameter is incorrect
windows credential manager error
credential manager the computer must be trusted for delegation
credential manager error an error occurred while performing this action
credential manager error the computer must be trusted for delegation
credential manager error windows 10
credential manager error the requested operation cannot be completed
windows 10 credential manager error
windows credential manager parameter is incorrect
credential manager the requested operation cannot be completed

Many users have reported issues with workstations that were previously connected to a domain. These workstations are not accepting Outlook credentials, and the Credential Manager refuses to start, displaying an error code 0x80090345.

The issue appears to be related to Windows updates KB3000850 and KB299261. We will try to resolve the issue without uninstalling the updates, and if that doesn’t help, we’ll uninstall the updates as it seems to be a sure workaround for this issue.

This tutorial will apply for computers, laptops, desktops, and tablets running the Windows 10 and Windows 11 operating systems (Home, Professional, Enterprise, Education) from all supported hardware manufactures, like Dell, HP, Acer, Asus, Toshiba, Lenovo, Alienware, Razer, MSI, Huawei , Microsoft Surface, and Samsung.