Jira Service Desk - Connect a Custom email Account - Cannot add!?

Question

Hi, I have issue too. 
On Microsoft click -> Opens for extremely short time some url and browser auto-close it immediately.

Tried all suggestions:

1. Enable/Disable  - done
2. Incognito mode  - done
3. User groups (site-admin, administrators, administrators) - Done
4. Checked with Helper -  Able to administer Project -  Done
5. Tried different browsers

May be anybody have any new solutions?

Konstantin Gagač_jid8la · Answer

Hi, Daniel,
no there are no any add blockers. tried different browsers, different pc's too. 
What i captured that (Opens for extremely short time some url and browser auto-close it immediately. ) is an 500 error:

Failed to load resource: the server responded with a status of 500

Daniel Swiatek · Answer

Is there any AdBlocker in installed? Did you tried some different Browsers?