How to Solve Office activation error 0x80070005?
Scan for Malware and viruses
1.The error 0x80070005 also occurs due to the malware or a virus, which can delete or alter your important system files, such as the Windows Registry.
2. To make sure that your system is not affected by malware, run the Windows Security,
3. After the scan, restart your PC and try to install the Windows updates