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KseniKseni-9560 avatar image
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KseniKseni-9560 asked KaelYao-MSFT commented

The VSTO add-on takes about 2.5 minutes to start if there’s no Internet connection

Dear colleagues! We need a recommendation to solve a problem associated with the long opening of MS Word through the add-in in the absence of the Internet.

Description:
The VSTO add-on takes about 2.5 minutes to start if there’s no Internet connection

The add-in is signed with a Symantec certificate. .net 4.5.2 is used here.

Why does it happen: WORD MS directs requests to certification authorities to find a list of revoked certificates.

The requests go to servers:
.symcd.com
.symcb.com
ctldl.windowsupdate.com

It proceeds 5 requests for 30 seconds in total. The customer's gateway blocks the Internet and, in fact, the request falls off after 30 seconds of proceeding. The customer cannot change the logic of the gateway. Disabling of the search for revoked certificates usually helps on Win 7.
On Win10 this setting doesn't help. Thanks in advance for the recommendations!

office-vsto-com-dev
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Hi @KseniKseni-9560

Since your question is related to VSTO, I have removed the tag "office-exchange-server-administrator" which is used for Exchange On-premises server questions, and added the correct tag "office-vsto-com-dev" to it.
Thanks for your understanding and hope you will get the answer soon.

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