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LucasVorms-2572 avatar image
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LucasVorms-2572 asked YukiSun-MSFT commented

outlook 2019 takes long time to open

Dear all,

We are testing office 2019 and saw that it is taking very long time to launch.

If we use chronometer we observed that it takes 29 second to launch outlook 2019.

if we modify the host file as below :

127.0.0.1 outlook.office365.com

Then it takes 7 seconds to launch.

As we don't want to modify the host file of all the computers is there any ways to just disable the office 365 from GPO or something else ?
FYI We are using Exchange 2016.

Regards,

Lucas

office-exchange-server-administrationoffice-itpro
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AshokM-8240 avatar image
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AshokM-8240 answered

Hi @LucasVorms-2572 ,

You can disable the Autodiscover query to Office365 using the registry key.

HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\AutoDiscover
Create a DWORD value for ExcludeExplicitO365Endpoint and change the value to "1":
RegKey: ExcludeExplicitO365Endpoint
Value: 1

You can create GPO to create this registry and push it to the client machines

https://thesolving.com/server-room/how-to-deploy-a-registry-key-via-group-policy/

Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.

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YukiSun-MSFT avatar image
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YukiSun-MSFT answered YukiSun-MSFT edited

Hi @LucasVorms-2572,

To add to what AshokM mentioned, this can also be controlled by the built-in policy below (Administrative Template files can be downloaded via this link. ):

69357-1.png

After the above policy is applied, the following registry key will be created accordingly:
69361-2.png

Update:
If the above doesn't work, please select "Disable the Autodiscover V2 service" as well in the group policy and check if there could be any improvement:
69678-3.png

The registry key will be changed to as follows:
69749-4.png


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LucasVorms-2572 avatar image
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LucasVorms-2572 answered YukiSun-MSFT edited

Thanks a lot for your answers.

We tested but it didn't decrease the launch time as much as when we edited the host file.

It is still taking 25 second to launch outlook 2019.

Regards,

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Hi @LucasVorms-2572,

Please try adding the DisableAutodiscoverV2Service =dword:00000001 reg key as well and see if there could be any improvement. (Remember to back up the registry key for restoration in case problem occurs .) I'll edited my reply above to include this part.

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LucasVorms-2572 avatar image
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LucasVorms-2572 answered YukiSun-MSFT commented

70117-screenshot-2021-02-19-163351.jpg
Dear YukiSun,

Thank you for your reply.

Unfortunately it is still taking long time to launch.
Please find below the screenshot of my registry settings.

Regards,


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Hi @LucasVorms-2572

May I know if you have given it a shot after restarting the computer?
And any difference if adding the two registry keys under the path below as well?

HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\AutoDiscover
DisableAutodiscoverV2Service =dword:00000001
ExcludeExplicitO365Endpoint =dword:00000001


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Hi @LucasVorms-2572

Just checking in to see if you have had a chance to check it? Any update would be appreciated.


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StefanFalk-3673 avatar image
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StefanFalk-3673 answered YukiSun-MSFT commented

Hello everybody,

I wanted to conduct the connectivity test in English language. So I went to https://testconnectivity.microsoft.com/tests/exchange, choose the settings in the top right corner, choose English language and clicked save. However, nothing happened. The language dialog sayed open, and the language did not change. I tested this from my own workstation with the same results. Why can't I save that language choice?

We implemented a policy setting HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\AutoDiscover\ExcludeExplicitO365Endpoint to a DWORD = 1 long ago, but it does not seem to help here.

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Hi @StefanFalk-3673,

Regarding the language version of the Remote Connectivity Analyzer, I tried it at my end and it also seems to me that the language settings at the right corner doesn't take effect. Based on my test, it seems that the display language of the page is related to the language of the browser. So you may need to change the default language of the Internet browser to English and check the result.

As per the ExcludeExplicitO365Endpoint registry key, are you also experiencing Outlook slowly opening issue? Does adding the "127.0.0.1 outlook.office365.com" to the host file work for you?


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