Windows 10: office 2013 suddenly says activation failed

what causes this, and what is the solution?
I think that this installation of office was activated with a MAK key, which is supposed to be a permanent activation.

:)

 

INACCESIBLE BOOT DEVICE ERROR on 3 computers with WIN 10

I had images stored on my NAS. I did recover two computers. The image worked on one computer, lost my applications on the 2nd computer, Totally blue screened my 3rd computer that had Office 2013 and Blue Iris installed. I reinstalled win7 on 3rd computer.
Installed Blue Iris OK, installed Office 2013 and Key and that wouldn't activate. Bought ($160), installed, and activated office2016 from Microsoft Store.

Installed Office 2013 from my Microsoft account on 2nd computer. It activated from the Key on record at Microsoft then rejected saying the number of activation was exceeded. I may have given that office away on a laptop.

I found the purchase receipt and activation key for the Office 2013 installed on 3rd computer before it failed. Tried to install it on the 2nd computer. It took the key but wouldn't activate.

All this happened in a period of 2 days.

I am so pissed.

I know my Office 2013 purchased from Sam's Software is good. I activated and used it several years.

I have since backed up Win 10 on 1st computer and Win 7 on 3rd computer.

The 3rd with Win 10 repeatedly fails to backup. I did go to admin cmd prompt and run dism.exe and sfc /scannow.

sfc reported the computer had integrity. It still cant be backed up. The backup goes to 57% and fails. Says it cant access a volume.

 

INACCESIBLE BOOT DEVICE ERROR on 3 computers with WIN 10

I had images stored on my NAS. I did recover two computers. The image worked on one computer, lost my applications on the 2nd computer, Totally blue screened my 3rd computer that had Office 2013 and Blue Iris installed. I reinstalled win7 on 3rd computer.
Installed Blue Iris OK, installed Office 2013 and Key and that wouldn't activate. Bought ($160), installed, and activated office2016 from Microsoft Store.

Installed Office 2013 from my Microsoft account on 2nd computer. It activated from the Key on record at Microsoft then rejected saying the number of activation was exceeded. I may have given that office away on a laptop.

I found the purchase receipt and activation key for the Office 2013 installed on 3rd computer before it failed. Tried to install it on the 2nd computer. It took the key but wouldn't activate.

All this happened in a period of 2 days.

I am so pissed.

I know my Office 2013 purchased from Sam's Software is good. I activated and used it several years.

I have since backed up Win 10 on 1st computer and Win 7 on 3rd computer.

The 3rd with Win 10 repeatedly fails to backup. I did go to admin cmd prompt and run dism.exe and sfc /scannow.

sfc reported the computer had integrity. It still cant be backed up. The backup goes to 57% and fails. Says it cant access a volume.

I have a 4th computer standing guard in a shed in the woods. It has win7/10 and has rejected some win 10 upgrades. I'm afraid to reboot it. I built all these high end computers and paid for legal software. this situation is very distressing to me.