Windows file encryption EFS encryption, how to encrypt computer folders

EFS is a Windows encrypted file system. Files and data on NTFS volumes can be directly encrypted and saved by the operating system, which greatly improves data security. The editor below will talk about how to use the Windows file encryption function EFS.

Under what circumstances will EFS result in access denial

1. Reinstall the system

2. Deletion of the system account

3. Deletion of the certificate

I say important things three times: be sure to back up the certificate after encryption!

I say important things three times: be sure to back up the certificate after encryption!

I say important things three times: be sure to back up the certificate after encryption!

Turn on folder encryption

Right-click on the folder, "Properties", click "Advanced", check "Encrypt content to protect data", and confirm , select Apply changes to this folder, subfolders, and files.

Backup file encryption key method one

#1. When encrypting for the first time, there will be a prompt to back up in the lower right corner;

2. Click "Backup Now";

3. The above is the default, click Next to continue;

4. You need to set a password here to proceed to the next step. The password must be remembered;

5. Select the save location ;

6. The export was successful;

7. This is the exported certificate. Remember to make a few more copies. Save it in different storage locations to ensure it will not be lost.

Backup file encryption key method two

1. Run "Win+R", enter "certmgr.msc" and press Enter;

2. Click "Personal" and "Certificate" on the left, and export the certificate in the right window;

3. Select "Yes, export private key", and the following steps are the same as "Method 1".

Certificate import

1. After the system environment changes and becomes inaccessible, you need to import the backup certificate;

2. Double-click the backed-up certificate and go to the next step;

3. Enter the password of the device when exporting;

4. Keep "Next" until completed;

5. The file can be accessed again.

The last thing I want to say is that if you don’t back up the certificate, then this file does not belong to you. There is no solution, so:

I say important things three times: you must back up after encryption. Great certificate!

I say important things three times: be sure to back up the certificate after encryption!

I say important things three times: be sure to back up the certificate after encryption!

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