From Field locked on Email form in dynamic CRM 2016

Question

"From" field on Email form is locked.I can't understand why it is behaving like this.Because we haven't locked it on form and we also doesn't use any script for that.

Answer 1

This seem to be an issue with Update 1 for CRM 2016. The only solution I found was to:

1. Create a new Solution, find the Email entity and add only the From field to the Solution.
2. Export the Solution, extract it and open the customizations.xml file.
3. Find the <LookupTypes /> tag and replace it with:

<LookupTypes>               
<LookupType id="00000000-0000-0000-0000-000000000000">8</LookupType>
<LookupType id="00000000-0000-0000-0000-000000000000">2020</LookupType>
</LookupTypes>

4. Save changes, zip back the Solution folder and import it back to your CRM organization.

Hope this helps.