Registry mismatch or disabled add-in. Fix:
However, one of the most common pain points for IT departments and users alike is finding the correct version of this add-in—specifically the release. As Microsoft Outlook has shifted towards 64-bit as the standard (especially with Microsoft 365 and Office 2019/2021/LTSC), the demand for "veritas enterprise vault outlook add-in -x64- download" has skyrocketed.
Go to https://www.veritas.com/support/en_US/downloads.html
If you encounter persistent issues, contact Veritas Technical Support with the build number of your EV server and the exact error message from the Outlook COM add-in diagnostics.
| Feature | 32-bit (x86) Add-in | 64-bit (x64) Add-in | | :--- | :--- | :--- | | | Outlook 2010, 2013, 2016 (32-bit) | Outlook 2016, 2019, 2021, Microsoft 365 (64-bit) | | Memory Limit | 2 GB (can cause crashes with large vaults) | Unlimited (up to system RAM) | | Performance | Slower with >10,000 items | Optimized for large-scale archives | | Modern Registry | Runs under WOW6432Node | Standard HKLM\Software... |