Whenever you try to install office 365 on a number of computers then there is a possibility that you might run in to some problem. At times, you may receive error message like “we're sorry, but we can't validate the signature of files that is required to install your Office product”. However, this is a most frequent error that you can solve with applying some easy steps. To know about these steps, you need to take Office 365 Support at the comfort of your home. Here, the available experts will surely guide you to eradicate this issue once and for all.
With an aim to fix this error, try the below mentioned methods.
Try a wired connection or high speed connection.
If this method resolves your error completely, then you are good to go. But, if you problem still persists, then continue follow the second method which is more efficient and given by the team of Microsoft Office 365 Support. In this process, you need to clear all your temporary internet files as they create errors at the time of installation process.
Clear out entire temporary Internet files:
After applying these steps, we ensure that you can fix can’t verify the signature error at the time of installation of office 365. We also know that some of the steps are not easy to apply especially when you are not from the technical background. So, we propose you to take Microsoft 365 Support at your door-step via dialing our toll-free number. Here, you will surely get appropriate guidance to resolve such types of error.
Source Link:- https://customerserviceshelps.blogspot.com/2019/03/via-office-365-support-fix-cant-verify.html