May 22, 2022
If you are trying to change mailbox delegation settings via Exchange Admin center and show the access control defines the ObjectType {xxx-xxxx-xxx-xxxx} that can't be resolved tab mailbox delegation, don't panic, today, I am going to how to fix it.

If you are trying to change mailbox delegation settings via Exchange Admin center and show the access control defines the ObjectType {xxx-xxxx-xxx-xxxx} that can’t be resolved tab mailbox delegation, don’t panic, today, I am going to how to fix it.

1.Login to exchange server.

2.Open Internet Information Services (IIS) Manager.

3.On the IIS Manager page, expend exchange server, select Application Pools, right-click MSExchangeECPAppPool, select Recycle.

The issues should be fixed now, you also can run IISReset or reboot exchange server.

Hope you enjoy this post.

Cary Sun

Twitter: @SifuSun

Web Site: carysun.com

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