How to Fix Microsoft 365 Activation Error 0x80070005 After Installing EPM
Question details
The user needs to resolve an activation error preventing Microsoft 365 Apps from verifying the account subscription after installing a third-party add-in.
- Product
- Microsoft 365 Apps
- Device & OS
- not provided
- Scenario
- Attempting to sign back into a Microsoft Office account after installing an Excel EPM (Enterprise Performance Management) component.
- Observed behavior
- The system returns activation error code 0x80070005, blocking the user from authenticating and activating their Office apps.
Ensure you are logged into Windows with an Administrator account, as error 0x80070005 is essentially a permissions issue. Temporarily close all Office applications and EPM services before proceeding.
Run the Microsoft Support and Recovery Assistant (SaRA)
The Microsoft SaRA tool automatically diagnoses and fixes the most common Office activation and permission errors, including 0x80070005.
Because third-party EPM installations can alter background registry keys and licensing services, using Microsoft's automated diagnostic tool is the safest and fastest way to restore proper activation permissions.
Visit the official Microsoft Support website to download the Microsoft Support and Recovery Assistant. Run the downloaded installer and agree to the terms.
Launch the tool and select 'Office & Office Apps' from the main menu. Click 'Next', then choose the option that says 'I've installed a subscription version of Office, but I can't activate it'.
Follow the on-screen prompts. The assistant will check your system permissions, clear faulty activation tokens caused by the EPM component, and prompt you to sign back into your Microsoft 365 account.
Perform an Online Repair of Microsoft 365
If core Office files were damaged or locked by the EPM component, an Online Repair will download and replace the missing or corrupted installation files.
Manually Fix Network Service Registry Permissions
Error 0x80070005 stands for 'Access Denied'. Manually granting the 'Network Service' account full control over Office licensing registry keys can resolve the blockage.
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- 1. Download the Installer: Visit the WPS Office website and click the free download button to get the latest installation file.
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Frequently Asked Questions
What does error code 0x80070005 mean in Microsoft 365?
Error code 0x80070005 translates to 'Access Denied'. In the context of Microsoft 365, it means the application does not have the necessary Windows permissions to modify the registry or access the system folders required to verify and store your Office license.
Why did installing an EPM component cause an Office activation error?
Enterprise Performance Management (EPM) components are deep-level Excel add-ins that often modify system registries, user profile directories, or background services to function. During this process, they can accidentally overwrite or restrict the specific folder permissions Microsoft 365 uses to authenticate your account.
Will uninstalling the EPM component fix the 0x80070005 error?
Not necessarily. While uninstalling the EPM add-in will stop further conflicts, the permissions changes it made usually remain behind. You will typically still need to run an Office repair, use the Support and Recovery Assistant, or reset network service permissions to clear the existing access denied status.
