How to fix c\Program Files\Microsoft Office\Root\Office 16\AppV1svSubsystem64dll error

Question

Duane Taylor 5

How to fix User's image

1 answer

Answer 1

DaveM121 818K Independent Advisor

That indicates there is some corruption in the Office installation, the best first option is to perform a full repair of your Office installation.

Open the Settings App (gear icon on your Start Menu)

Go to Apps, then scroll down to find Microsoft Office

Select that and choose Modify - Online Repair.

That should fix any issues with your Office Installation

Duane Taylor 5 Reputation points

2025-08-22T15:14:29.9166667+00:00

Thanks. I tried that and got this
DaveM121 818K Reputation points Independent Advisor

2025-08-22T15:16:28.62+00:00

In that case, the best option is to completely uninstall Office, restart (not shut down) your PC, then go to the link below and re-install Office from your Microsoft account.

https://account.microsoft.com/services/
Duane Taylor 5 Reputation points

2025-08-22T18:13:16.8+00:00

I got the same error message when I tried to unistall it.
DaveM121 818K Reputation points Independent Advisor

2025-08-23T06:23:27.0533333+00:00

Sorry, I was offline.

In that case, the Office instalaltion is very corrupt, use this tool from Microsoft to completely remove all traces of the Office instalaltion, then restart your PC and re-install Office.

https://aka.ms/diag_officeuninstall
Duane Taylor 5 Reputation points

2025-08-26T08:54:37.41+00:00

Apologies, I didn't see this message. Yesterday I just clicked on the earlier link to install it without removing it first. I assumed I would get an error message. I didn't - it took a long time, but it installed and is now working. Thanks for everything!