Cause. This issue occurs because the NTLM API throttling limit (MaxConcurrentApi) is reached. Resolution. Hotfix information. A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article.

Use this app to try to recover lost files that have been deleted from your local storage device (including internal drives, external drives, and USB devices) and can’t be restored from the Recycle Bin.

Restore deleted files and folders or restore a file or folder to a previous state. Navigate to the folder that used to contain the file or folder, right-click it, and then select Restore previous versions.

Resolves a vulnerability in Windows Explorer that could allow remote code execution if a user visited a specially crafted webpage.

Having trouble connecting to your email from Outlook on your desktop? Follow these steps to let Outlook diagnose and fix errors in your Outlook mail profile that might be causing the issue.

Learn what to do if your username and password have stopped working. If you sign in to your account while traveling or if you install a new app that signs in with your account, you may get an alert. We just need you to provide a security code so we know it was you, and that your account is safe.

Restore an item from the SharePoint in Microsoft 365 site collection Recycle bin. On modern team sites and classic sites (subsites), in the left pane, select Recycle bin. On modern communication sites, select Site contents, and then select Recycle bin in the top navigation bar.

Common Issues and troubleshooting tips: Facial recognition failures. Fingerprint recognition failures. PIN failures. Learn how to troubleshoot Windows Hello sign in issues, error messages, or facial recognition.

Find your BitLocker recovery key. Windows 11 Windows 10. A BitLocker recovery key is needed when BitLocker can’t automatically unlock an encrypted drive in Windows. This key, which is a 48-digit number, is used to regain access to the drive.

Sign in using Microsoft Authenticator. Microsoft Authenticator helps you sign in to your accounts if you've forgotten your password, use two-step verification or multi-factor authentication, or have gone passwordless on your account.