问题
outlook-web-16.01.js:13 Uncaught TypeError: Cannot read property 'Version' of null
at Object.callback (outlook-web-16.01.js:formatted:4686)
at rt (outlook-web-16.01.js:formatted:4272)
This is what I get when I tried to use
Office.context.auth.getAccessTokenAsync(function (result) {
回答1:
After overriding everything inside <VersionOverrides xmlns="http://schemas.microsoft.com/office/mailappversionoverrides/1.1" xsi:type="VersionOverridesV1_1"> problem has solved.
<VersionOverrides xmlns="http://schemas.microsoft.com/office/mailappversionoverrides" xsi:type="VersionOverridesV1_0">
...
<VersionOverrides xmlns="http://schemas.microsoft.com/office/mailappversionoverrides/1.1" xsi:type="VersionOverridesV1_1">
...
<WebApplicationInfo>
<Id>9b096de7-56af-4b5c-bab5-360fcdf1b2e2</Id>
<Resource>api://localhost:44349/9b096de7-56af-4b5c-bab5-360fcdf1b2e2</Resource>
<Scopes>
<Scope>user.read</Scope>
<Scope>files.read</Scope>
<Scope>profile</Scope>
</Scopes>
</WebApplicationInfo>
</VersionOverrides>
</VersionOverrides>
回答2:
As far as we can see this is a Microsoft bug and is fixed by switching to "Try the new Outlook".
It appears that the current (legacy) UI is trying to access a method that is available only in the "new" API. The only solution would be to modify Microsoft's Javascript API to add the Version property (and link to your own imported version of this rather than the CDN), or wait until Microsoft completes the switch-over.
来源：https://stackoverflow.com/questions/48641465/uncaught-typeerror-cannot-read-property-version-of-null-in-outlook-web-16-01