Shulou(Shulou.com)06/02 Report--

Exchange server 2019 cannot preview office documents online after integrating office online server:

Question:

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When testing Exchange Server 2019, it was found that the office document could not be previewed online after integrating office online server. The error report is as follows:

Test:

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Upgrade / redeploy office online serve 2018 and install the latest patch will not solve the problem. Use [Set-OfficeWebAppsFarm-OpenFromUrlEnabled:$true] to open OpenFromUrlEnabled.

Create a shared directory on the client and copy the PPT or word files into it. Access the https://oos.it.com/op/generate.aspx and enter the share path such as:\\ aaa\ os\ BitTitan.pptx Select start Preview Test this link found that the server is normal

Skype for business client sharing PPT is fine.

Resolve:

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After looking at the official document https://docs.microsoft.com/zh-cn/officeonlineserver/enable-tls-1-1-and-tls-1-2-support-in-office-online-server

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\ SOFTWARE\\ Microsoft\ .NETFramework\ v4.0.30319]

"SchUseStrongCrypto" = dword:00000001

[HKEY_LOCAL_MACHINE\ SOFTWARE\ Wow6432Node\ Microsoft\ .NETFramework\ v4.0.30319]

"SchUseStrongCrypto" = dword:00000001

After attempting to enable TLS 1.1 and TLS 1.2, restart the office online server service and return to normal

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