Activate Office: fix errors, step by step

Office cannot be activated? It is usually down to one of four points: the wrong Microsoft account, a second Office installation on the computer, date and time, or missing permissions. Microsoft names fixed troubleshooting steps for this, which you work through in order. If Office shows the code 0xC004C060, the product key is no longer valid according to Microsoft; in that case contact the seller.

Quick decision

Message	Meaning according to Microsoft	What you do
“Unlicensed Product” in the title bar	Activation has failed, most features are disabled	troubleshooting steps 1 to 4 below
“This product key has already been used” on the redemption page	The key has already been redeemed and is no longer needed	sign in with the account that was used to redeem
0x80070005	Office cannot complete activation, often because of missing permissions	update Office, run as administrator
0xC004C060	The product key is no longer valid	contact the seller

The steps apply to Office 2024, 2021, 2019 and 2016 on Windows 11 and Windows 10.

Microsoft’s four troubleshooting steps

If activation fails, Office shows “Unlicensed Product” in the title bar and disables most features. Proceed as follows:

Sign in with the right account. Try all your own email addresses. Office may have been redeemed with a different address from the one you use every day. At work, the work account may be required instead of the personal account.
Check for multiple Office installations. Two installations on one computer can interfere with each other during activation. Open Control Panel › Programs › Programs and Features and search for “Office”. Uninstall the version you do not use and restart the computer.
Check the subscription. This step only concerns Microsoft 365. With a one-time purchase such as Office 2024, skip it.
Troubleshoot activation specifically. The measures in the next section serve this purpose.

If a single installation remains after step 2 and activation still fails, Microsoft advises an online repair of this installation.

Measures if Office still reports “unlicensed”

Date, time and time zone

If these settings are not correct, activation can fail.

Close all Office programs.
Click the date or time at the bottom right and open the Date and time settings.
Turn on Set time automatically and, if available, Set time zone automatically. Otherwise select your time zone manually.
Restart an Office program.

Run Office as administrator

This fixes permission problems that can block activation.

Close all Office programs.
Open the Start menu and type the name of a program, for example “Word”.
Right-click the Word icon and select Run as administrator.
Confirm with Yes.
Select File › Account › Activate Product or, if a notification bar appears, Reactivate.

Update Office

Current updates can fix activation errors.

Open an Office program, for example Word.
Select File › Account.
Under Product Information, select Update Options and then Update Now. If this entry is missing, first select Enable Updates.

Firewall, antivirus and proxy

Microsoft also names three places where the connection to the activation service can get stuck: the firewall, the antivirus program and proxy settings. Check with the vendor of your firewall or antivirus software how the program can be turned off temporarily, and turn it back on afterwards. You will find the proxy settings under Settings › Network & internet › Proxy. In company networks, the IT department helps.

“This product key has already been used”

The message appears if you enter a key that has already been redeemed once more at microsoft365.com/setup or office.com/setup. According to Microsoft, this means: the key has already been redeemed and is no longer needed.

Sign in at account.microsoft.com with the account you used to redeem the key.
Find your Office product in the account and select Install.
After the installation, open Word and sign in with the same account.

If you never redeemed the key yourself, report the problem in your order instead of making further attempts.

Error 0x80070005

The message reads: “We’re sorry, something went wrong and we can’t do this for you right now. Please try again later. (0x80070005)”. Microsoft names three solutions:

Update Office, as described above.
Run Office as administrator and start activation again via File › Account › Activate Product.
After a Windows update: if the error occurred directly after a Windows update, Microsoft describes a change to permissions in the Windows registry. Microsoft itself warns that mistakes in Registry Editor can cause serious problems and advises making a backup first. We recommend this step only for experienced users; on request, our support helps you via remote assistance.

Error 0xC004C060

On this code, Microsoft writes: the product key is no longer valid. Microsoft advises contacting the seller. The troubleshooting steps above do not help here.

If you bought the key from us, proceed as follows:

Open your delivery email or the order in your customer account.
Select Report a problem and the affected key.
Enter the error code and briefly describe what happens. A screenshot of the message helps.

We check the report and replace a defective key free of charge, as a rule within 24 hours. In the meantime, do not keep trying the key again and again.

Common causes before activation

Key and edition do not match. A key for Office Home & Business 2021 does not activate Office 2024 or Microsoft 365. Compare the product name and version under File › Account with your order. The editions are shown in the comparison of the Office 2024 editions.
Wrong setup method. You redeem Office Home and Home & Business with a Microsoft account, see Install Office: redeem the key. You install Office Professional Plus, Office Standard, Project and Visio with an installation file and key, see Install Office Professional Plus.
Typos. Copy the key instead of typing it. Mix-ups such as 0 and O or 8 and B are common.
Mixed bit versions. 32-bit and 64-bit Office cannot be installed side by side, see Office 32-bit or 64-bit.

If nothing helps

Write to us with the order number, product name, operating system and the error message or a screenshot. We help by email and, on request, via TeamViewer remote assistance by appointment; the options are listed under Help. You will find current Office versions in the
Microsoft Office category.

Frequently asked questions

Activating Office 2021 Professional Plus does not work: what is the cause? First check whether the installed edition matches the key and whether there is a second Office installation on the computer. Professional Plus is not redeemed via the Microsoft account, but activated with the product key in the app. Run Word as administrator and start activation again.

Where do I enter the Office product key? For Office Home and Home & Business, at microsoft365.com/setup, together with your Microsoft account. For Office Professional Plus, in an Office program when it asks for the key.

How do I activate an Office 2021 license after a reinstallation? For the editions with a Microsoft account, you install Office from the account and sign in in Word. You do not enter the key again.

What does “Unlicensed Product” mean? Activation has failed. Office then disables most features until the cause has been fixed. Your documents are retained.

What do I do about error 0xC004C060? According to Microsoft, the key is no longer valid. Report the problem via “Report a problem” in your order; we check the case and replace a defective key.

Sources

Checked on 2026-11-10 against the publisher’s information:

Office activation: common errors and how to fix them