Error handling may occur when activating an Office 2007 program

This article will describe how to handle problems that may be encountered when you try to activate an Office 2007 program. These problems may appear for several different reasons.Therefore, this article has several methods that you can use in some specific cases.

This article is for beginners to get used to computers, so you can easily fix the following steps even if you're just a "beginner" about a computer.

Symptom error

When you try to activate an Office 2007 product, you may encounter one of the following error signs:

• You receive an error message:

Your software không thể được hoạt động vì phím này đã được cài đặt với không hợp lệ. Hãy gỡ bỏ tập tin này và cài đặt nó sử dụng một KEY hợp lệ
(Your software cannot be activated because the product key you installed is invalid. Try uninstalling the software and reinstalling it with a valid key .)

• Activation errors. In addition to the above case, you may receive a message indicating the limited status of the computers on which you can activate Office 2007 products.

When you run an Office 2007 program (this program is still in use before), you receive an error message. The error message indicates that important changes have been made to the computer's configuration. This is an error message that appears when you experience the following symptoms:

• When you try to activate Office 2007 products, and the Activation Wizard window disappears

• When you try to use the Internet to activate Office 2007 products, you receive an error related to the communication.

• When you try to activate an Office 2007 product set after it has been successfully installed, the Activation Wizard does not run. You did not receive any error messages again.

After entering the authentication ID provided by the support staff, you receive an error message. The error message indicates that your authentication ID is invalid.

When starting an Office 2007 program (still in normal use before), the program runs but has some features reduced.

Note : Some activation issues may be due to the Opa12.dat file being corrupted in an Office 2007 program. One of the symptoms is that the product does not yet have Office Genuine Advantage validation.

Methods of handling problems

Note : If you are trying to install an OEM (Original Equipment Manufacturer) version of Office 2007 on another computer, be aware that you can only install the OEM version on a single computer. If you want to install on another computer you have to buy a new version.

Method 1 : Verify the time and date and time settings are correct on the computer

Click Start , select Run , enter timedate.cpl and click OK (or double-click the clock icon to the right of the taskbar below the screen). If the time and date are incorrect, correct it. If this still does not solve the problem, continue with the second method.

Method 2 : Determine which version of the product you are trying in Office 2007

If Office 2007 products run in feature-restricted mode, you may be using an expired trial version of Office 2007.

Note : In feature limited mode, the features of the programs can only be viewed. When a program is running in restricted mode, many menu icons are unavailable (dimmed) to prevent the use of those menu features. Some limitations of feature restriction mode include:

• Cannot create new document.

• Can still view created documents but cannot edit them

• Can print documents but cannot save them.

Step 1: Check Office 2007 version

Check the trial version of Office 2007 that you are using by following these steps:

1. Launch Microsoft Office Word 2007

2. Click on Microsoft Office Button .

3. Click on the program name option Options .

4. In the left navigation, click Resources .

5. Click the About button in the about Microsoft Office Word 2007 section .

Step 2: Verify that the trial version of Office 2007 has expired

1. Launch Microsoft Office Word 2007

2. Click on Microsoft Office Button .

3. Click on the program name option Options .

4. In the left navigation, click Resources .

5. Click the Activate button in the activate Microsoft Office .

If the trial version of Office 2007 has expired, the program will issue a notification indicating this situation.

If you are running an expired Office 2007 trial version, you must reinstall another version. You cannot activate an expired trial version.

If you do not run the trial version and still have an error, go to method 3.

Method 3 : Delete the Opa12.dat file

Windows Vista

In Windows Vista, the Opa12.dat file is stored in a different location than previous Windows versions. To delete this file, you must first configure all hidden folders. To do this, follow these steps:

1. Click Start to select Computer

2. In the Organize menu, click Folder and Search Options .

3. On the View tab, select Show hidden files and folders section then click OK

To delete the Opa12.dat file, follow these steps:

1. Click Start . In the Search box enter % programdata% , then press Enter .

2. Double-click the Microsoft folder

3. Double-click the Office folder

4. Double-click the Data folder, right-click the Opa12.dat file in this folder and select Delete .

Important : Do not delete the Opa12.bak file

5. Close the Windows Explorer window

6. Start the 2007 Office program to start the 2007 Office Activation Wizard

Windows XP

1. Click Start, click Run , enter % AllUsersprofile% Application DataMicrosoftOfficeData , click OK

2. Opa12.dat file is located in the Data folder just entered

3. Right-click the Opa12.dat file and select Delete .

Important : Do not delete the Opa12.bak file.

4. Close the folder

5. Remove the 2007 Office program to start the 2007 Office Activation Wizard.

Note : When you remove Office 2007 from the computer, the copyright file has not been removed. In addition, the copyright file will not be overwritten when you reinstall Office. By deleting the Opa12.dat file, you almost re-created the copyright file.

Method 4 : Check Internet connection

To check if you have an Internet connection, try opening an Internet Explorer browser and note that the browser must start with a pre-set home page.