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You may not have the appropriate permissions Issues that you experience when you try to access files and folders may be related to permissions.

Permissions are rules that determine whether you can access or change files and folders. To check permissions on a file or folder, follow these steps:. Press and hold or right-click the file or folder, and then click Properties. Under Group or user names , tap or click your name to see the permissions that you have. To open a file, you have to have the Read permission. To change the permissions of a file or folder, follow these steps.

Important You must be logged on as an administrator to change permissions on files and folders. Press and hold or right-click the file or folder, and then tap or click Properties.

Tap or click Edit , tap or click your name, select the check boxes for the permissions that you must have, and then click OK. The file or folder may be encrypted Encryption can help protect files and folders from unwanted access.

You cannot open an encrypted file or folder without the certificate that was used to encrypt it. To determine whether a file or folder is encrypted, follow these steps:. Tap or click the General tab, and then tap or click Advanced. If the Encrypt contents to secure data check box is selected, you have to have the certificate that was used to encrypt the file or folder to be able to open it. In this situation, you should obtain the certificate from the person who created or encrypted the file or folder, or have that person decrypt the file or folder.

You may not have ownership of a file or folder If you recently upgraded your computer to Windows 7 from an earlier version of Windows, some of your account information may have changed. To take ownership of a file or a folder, follow these steps:. Right-click the folder that you want to take ownership of, then click Properties. Click the Security tab, click Advanced , then click the Owner tab. Note If you are prompted for an administrator password or for confirmation, type the password or provide confirmation.

If you want this person to be the owner of files and subfolders in this folder, select the Replace owner on subcontainers and objects check box. To determine the permissions of the file or folder, follow these steps:. Under Group or user names , click your name to see the permissions that you have. To change permissions on a file or folder, follow these steps. Click Edit , click your name, select the check boxes for the permissions that you must have, and then click OK.

For more information about permissions, see What are permissions? Click the General tab, then click Advanced. You should obtain the certificate from the person who created or encrypted the file or folder, or have that person decrypt the file or folder. For more information, see Import or export certificates and private keys.

Cause A problem that prevents you from accessing or working with files and folders can occur for one or more of the following reasons:. To check permissions on a file or a folder, follow these steps:. The file or folder may be corrupted Files can become corrupted for several reasons. The most common reason is that you have a file open when your computer crashes or loses power.

Most corrupted files cannot be repaired. In this situation, you should either delete the file or restore the file from a backup copy. For more information about corrupted files and how to fix them, see Corrupted files: frequently asked questions. Your local user profile may be corrupted Occasionally, Windows might not read your local user profile correctly.

This may prevent you from accessing files and folders. Organizations that use Microsoft Store applications should ensure that the applications can be updated through the Microsoft Store over the internet, through the Private Store , or distributed offline to keep the applications up to date.

For Windows 10, this is only supported on Windows 10 Enterprise edition. AppLocker provides policy-based access control management for applications. You can block access to Microsoft Store app with AppLocker by creating a rule for packaged apps. You'll give the name of the Microsoft Store app as the packaged app that you want to block from client computers. For more information on creating an AppLocker rule for app packages, see Create a rule for packaged apps.

On Permissions , select the action allow or deny and the user or group that the rule should apply to, and then click Next. On Publisher , you can select Use an installed app package as a reference , and then click Select. Click Next. Create a rule for packaged apps has more information on reference options and setting the scope on packaged app rules. Optional: On Exceptions , specify conditions by which to exclude files from being affected by the rule. If possible, can I get your Office for Business account for further checking.

For privacy concern, I will send you a private message to collect it. If you can access to office portal successfully which means the account is valid, so in this case, it should be the issue of Microsoft Authenticator app. Given this situation, we recommend you ask a question here to get the dedicated support. Thanks for your understanding. If you also can't access to the Office portal which means the typed Office credential is invalid.

Maybe your username or password isn't correct. Or your Office Subscription is expired. In this case, you may try to reset the password to double-confirm it. Microsoft account help. Overview and sign in help. Password reset and recovery. Forgot username. Security and verification codes. Locked or compromised accounts. Account activity and closed accounts. Linked accounts. What is a Microsoft account? Update your profile. Microsoft account Microsoft account dashboard More Password or verification issue You forgot your password, the password entered isn't working, or you can't receive a verification code.