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How to Reinstall Office 2007 After Error 45005
Question details
The user wants to reinstall Microsoft Office 2007 Professional after previously removing it, but the reinstallation is blocked by error code 45005.
- Product
- Microsoft Office 2007 Professional
- Device & OS
- not provided
- Scenario
- Reinstalling and activating an older version of Microsoft Office on a computer.
- Observed behavior
- The installation or activation process fails and displays Error 45005, preventing the user from continuing to use Office 2007.
Ensure you have your original Microsoft Office 2007 installation media (CD/DVD) and the valid 25-character product key readily available.
Reinstall Using Original Media and Telephone Activation
Use your original installation media and product key, then bypass online activation issues by utilizing Microsoft's telephone activation system.
Error 45005 during an Office 2007 reinstallation often points to activation server connection issues or expired digital certificates, as this software is well past its end-of-life. To resolve this, you must rely on physical media and offline activation methods.
Insert your original Office 2007 installation CD/DVD into your disc drive, or run the original setup.exe file if you have a digital backup.
When prompted by the setup wizard, carefully type in your valid 25-character product key and proceed with the installation.
Once the installation finishes, open Microsoft Word or Excel to trigger the Microsoft Office Activation Wizard.
If online activation fails with Error 45005, select the option that says 'I want to activate the software by telephone' and click Next.
Select your country/region from the dropdown menu, call the provided toll-free number, and follow the automated prompts to receive your confirmation ID and complete the activation.
Switch to WPS Office to Avoid Outdated Software Errors
Because Microsoft Office 2007 is obsolete and its activation servers are largely unsupported, reinstalling it can be incredibly frustrating. WPS Office is a modern, free, and highly compatible alternative that eliminates activation errors like 45005 while supporting all your old files.
Frequently Asked Questions
What causes Error 45005 in Microsoft Office 2007?
Error 45005 is typically an activation or licensing error. It often occurs when the software cannot communicate with Microsoft's legacy activation servers, or when leftover registry keys from a previous installation conflict with the new install.
Can I download an Office 2007 installer online if I lost my disc?
No, Microsoft no longer provides official download links or installation files for Office 2007 since it has reached its end of support. You must possess the original physical installation media.
What should I do if the telephone activation numbers no longer work?
Because the product is retired, some regional automated activation numbers may be disconnected. If you cannot reach the activation center, you will not be able to activate Office 2007 and should consider upgrading to a newer suite or using a free alternative like WPS Office.
Will using the Microsoft Support and Recovery Assistant fix Error 45005?
The Microsoft Support and Recovery Assistant (SaRA) tool is primarily designed for modern Microsoft 365 and Office 2016+ installations. It may not effectively troubleshoot activation or installation errors for versions as old as Office 2007.
