Microsoft Office 365/2021/2019 Error code 1402 Returns following error messages
1. Something went wrong Error 1402 Go online for additional help
2. Office is Busy, There is a problem starting the Office 365 Installation
3. We are sorry, but we are unable to start your office 365 installation program
4. Sorry installation can’t continue because no compatible office 365/2021 products are detected
5. We are sorry, but we can’t verify the signature of files required to install your office 365 product
6. Internet connection needed. Office 365/2021 program installation error code 1402
7. Background installation ran into a problem
Something went wrong Error code 1402 Go online for additional help
When trying to start an Office application, you will get this error stating “Something went wrong”. If the operating system unable to add and/or remove the office 365 products that you are requesting, It requests you to verify file’s signature that required to install the office 2021 product. Usually, returns error code series 300XX, 1xxx series depends on the cause of the issue.

Office is Busy, There is a problem starting the Office 365/2019 program Installation
The error “Office is busy” pops up when you try to open any office 365 installation program like word ,excel etc, and the office already in progress .It gives a message stating “we are either updating or helping you add/ or remove some programs”.