In this article:


Outlook is historically 'desktop software' - i.e. software that is installed onto your computer. Whereas LawVu is 'cloud-based software' - i.e. not installed onto your computer. The Outlook Add-in acts as a type of bridge between these two worlds to allow you to get information from Outlook on your computer into LawVu in the cloud.
Because the Add-in is installed onto your computer it will be subject to the same network and security restrictions that you have in place.

Outlook Version Support

The LawVu add-on for Outlook is available for:

  • Outlook build Version 2102 (update February 2021) is required as a minimum

  • Outlook 2016 on Windows (Limited support*)

  • Outlook 2016 on Mac (Limited support*)

  • Exchange 2013 on-premises and later versions (Limited support)

  • Office365 recommended, see the minimum supported build number

  • Outlook on iOS, 

  • Outlook on Android,

  • Outlook on the web in Office 365 and

*Outlook 2016 has reached the end of mainstream support on October the 13th 2020. The underlying API technologies have limited support for downloads. If you are using Outlook 2016 or older we recommend that you upgrade to have a much better experience.

*Office365 is fully supported following the update cycle defined by Microsoft under the Semi-Annual Enterprise Channel for organizations.

If your Office version is under the supported version which is listed in the table below then our add ins might fail to work. Please contact your IT to check and ensure you have an updated version of Office.




Release date

Semi-Annual Enterprise Channel



July 13, 2021

Outlook web cache locations:

Please find your Windows version and combine with your Office version from below table to identify your browser cache location. This location is set by Microsoft and not by the LawVu add-in.

Operating System

Office version

New Edge WebView2 (Chromium-based) installed?

Browser cache used from


Office on the web

Not applicable

The browser in which Office is opened.



Not applicable


Windows 7, 8.1, 10

non-subscription Office 2013 or later

Doesn't matter

Internet Explorer 11

Windows 7

Microsoft 365

Doesn't matter

Internet Explorer 11

Windows 8.1, Windows 10 ver. < 1903

Microsoft 365


Internet Explorer 11

Windows 10 ver. >= 1903

Microsoft 365 ver. < 16.0.116291

Doesn't matter

Internet Explorer 11

Windows 10 ver. >= 1903

Microsoft 365 ver. >= 16.0.11629 AND < 16.0.13530.204241

Doesn't matter

Microsoft Edge2, 3 with original WebView (EdgeHTML)

Windows 10 ver. >= 1903

Microsoft 365 ver. >= 16.0.13530.204241


Microsoft Edge2, 3 with original WebView (EdgeHTML)

Windows 8.1

Windows 10

Microsoft 365 ver. >= 16.0.13530.204241


Microsoft Edge2 with WebView2 (Chromium-based)

Common Solutions

There are a lot of versions of Outlook - and a lot of versions of Windows - and an almost infinite number of ways that your corporate network and security settings can be configured - this can make troubleshooting problems quite difficult.

Please be aware that the LawVu Outlook add-in is not supported for those using a Google or G-suite account.

We've listed some of the most common solutions to errors below:

1. Corrupt cache data

Clearing your Internet Explorer cache only takes a moment and will likely fix most problems you experience with the Outlook add-in. Clearing your IE cache is important because even if you always use another browser such as Chrome, the Outlook add-in still uses IE in the background for the integration.

How to clear your Internet Explorer cache

Alternatively, to clear your cache in Microsoft Edge, click the three-dot button in the top right and go to Settings > Privacy and Services > Clear Browsing Data > Choose what to clear.

Just clear everything and reload your browser.

2. Are you running the latest version of the Add-in?

The good old 'turn it off and on again' solution often holds true for Outlook.

  • Uninstall the Add-in - then close Outlook.

  • Then reopen Outlook and reinstall the Add-in.

  • Finally close Outlook and reopen Outlook.

This helps make sure that no errors have been encountered and that you are using the most recent version of the Add-in. For installation instructions - see the bottom of this article.

Shared mailboxes

Due to changes made by Microsoft mid-2020, we can no longer support an Outlook shared mailbox.

Problems Logging In

1. Is your account locked?

If you have attempted to login a number of times then your LawVu account could be locked - our advice in this case is to try a password reset - this will unlock your account and allow you to try again. Note - this only applies to non 'SSO' accounts.
To see how to reset your password please see this article.

2. Network / firewall restrictions

Because the Outlook Add-in is running from INSIDE your corporate network - it is subject to any firewalls or restrictions that are put in place by your corporate network security team.
If the Outlook Add-in is having problems connecting to LawVu then checking with your internal IT team is the best place to start.

The Outlook Add-in needs to connect to the following URL and, though this URL might be available from your web browser, it may not be available from Outlook

3. Internet Explorer security settings

The security settings in Internet Explorer can have a direct impact on the Outlook Add-in

To change the security settings in Internet Explorer click into 'Tools' > 'Internet Options' > 'Security'.
Depending on your version of IE you may find this under the 'Cog' icon.

1 - Try setting the security level settings down to 'Medium high' or 'Medium'.
2 - Ensure that 'Enable Protected Mode' is selected - Add-ins can only work with "Protected Mode" enabled in Internet Explorer.

Important - make sure that you restart Internet Explorer AND Outlook after changing the Internet Explorer security settings.

Further, you can reset zone security settings:

Then, add https://* to the trusted list:

Note - if after restarting both Internet Explorer AND Outlook - you may need to actually restart your computer.

Reporting a problem

Before you report a problem can you please check ALL of the above options.
If the issue still persists then please get in touch and let us know the follow

1 - What version of Outlook are you using?
Here is how to find out. 

2 - What version of Windows are you using?
Here is how to find out.

3 - Do you have Internet Explorer installed?

4 - Have you confirmed the Internet Explorer security settings above?

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