While troubleshooting with the Microsoft 365 support team, we came to the conclusion that the AIP add-in is causing the Word application to crash. On that moment we see in event viewer this error message: .NET Runtime version 2.0.50727.9151 - Fatal Execution Engine Error (00007FFE3FAF6D4E) (80131506) The steps we have tried: Installing .NET runtime => It was already the latest Disabling the add-in => Word works Uninstalling AIP => Word works Installing AIP => Word crashes Installing the newer preview version => Word crashes Installing with the .msi => Word crashes Reverting an Windows update => no result = not related Another device => no issues Issue started today 07/08/2021

AIP client not working - Add-in crashes Word

Dein - FocusOnBusiness 6

While troubleshooting with the Microsoft 365 support team, we came to the conclusion that the AIP add-in is causing the Word application to crash.

On that moment we see in event viewer this error message: .NET Runtime version 2.0.50727.9151 - Fatal Execution Engine Error (00007FFE3FAF6D4E) (80131506)

The steps we have tried:

Installing .NET runtime => It was already the latest
Disabling the add-in => Word works
Uninstalling AIP => Word works
Installing AIP => Word crashes
Installing the newer preview version => Word crashes
Installing with the .msi => Word crashes
Reverting an Windows update => no result = not related
Another device => no issues

Issue started today 07/08/2021

JamesTran-MSFT 36,361 Reputation points Microsoft Employee

2021-08-10T20:10:47.53+00:00

@Dein - FocusOnBusiness
Thank you for your detailed post and I apologize for the delayed response!

Because it's been a while since your initial post, and since you've been working with our Microsoft 365 support team, I just wanted to check in and see if you were able to resolve this issue?

If you have any other questions, please let me know.
Thank you for your time and patience throughout this issue.
Dein - FocusOnBusiness 6 Reputation points

2021-08-21T08:12:11.297+00:00

Hello James,

Thank you for your reply.

This issue still persists, even with the latest updates (Office & AIP client) in place.

Just some extra information about my device (it is a new device ~5 months old)

Processor: Intel(R) Core(TM) i9-10900K CPU @ 3.70GHz 3.70 GHz
RAM: 32 GB DDR4

Windows specifications
Edition: Windows 10 Business
Version: 21H1
OS build: 19043.1165
Experience: Windows Feature Experience Pack 120.2212.3530.0

Microsoft Azure Information Protection version: 2.12.62.0

Microsoft Office version: Microsoft® Word for Microsoft 365 MSO (16.0.14228.20216) 64-bit (Microsoft 365 apps for business)

Device is enrolled in Azure AD (Business Premium)

Excel didn't crash in the past, but now it does as well.
Eric R. Korb 1 Reputation point

2022-03-14T18:18:44.827+00:00

I'm having the same issue. I have to disable AIP to stop Word from crashing. Mine happens with multiple screens only - when I move the active window from one screen to the next, it crashes. Also, it loads 10X faster with the AIP com add-in disabled.