The built-in Guest account is off by default, which is why you cannot log in your computer through this account. If you would like to enable it so that another login option is available when you forget the passwords to other user or administrator accounts, you can learn how to enable Guest account on Windows 8 using the following three methods.
Video guide on how to enable Guest account in Windows 8:
Way 1: Turn on Guest account in Control Panel.
Step 1: Open Control Panel.
Step 2: Select Change account type to move on.
Step 3: Click Guest account to continue.
Step 4: Tap Turn On button in the Turn on Guest Account window.
Way 2: Enable Guest account in Local Group Policy Editor.
Step 1: Open Local Group Policy Editor.
Step 2: Find and open the policy named "Accounts: Guest account status".
You can locate it in Computer Configuration/Windows Settings/Security Settings/Local Policies/Security Options.
Step 3: Choose Enabled and tap OK in the following Properties dialog box.
Way 3: Enable Guest account in Computer Management.
Step 1: Open Computer Management.
Step 2: Locate and double-click Guest account.
You can click Local Users and Groups and open Users folder to find the account.
Step 3: When the Guest Properties dialog shows up, unselect Account is disabled and click OK.
To sum up, these three methods are helpful for you to quickly enable the Guest account in your PC, and which one is your favorite is up to you.
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