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JamiePavlovski-5208 avatar image
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JamiePavlovski-5208 asked YukiSun-MSFT commented

Install Apps from Microsoft Store - Salesforce

Trying to install Salesforce app latest version on a Exchange 2013 Standard on-premise version get the following error in the attachment. This is the same error i received when i first went to install it and i resolved the issue then by adding the following registry key below, i even checked it manually to ensure the Regkey took affect after installing the patch for the Microsoft exchange vulnerability KB5000871. Issue is still occurring so i need to confirm this patch hasn't potentially made any other changes that may stop it from working. RegEdit that fixed the problem first time around :

Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.2] [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.2\Client] "DisabledByDefault"=dword:00000000 "Enabled"=dword:00000001 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.2\Server] "DisabledByDefault"=dword:00000000 "Enabled"=dword:00000001 [1]: /answers/storage/attachments/82087-salesforce-error.png

office-exchange-server-administrationoffice-exchange-server-itpro
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YukiSun-MSFT avatar image
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YukiSun-MSFT answered YukiSun-MSFT commented

Hi @JamiePavlovski-5208,

As per your concern about the security patch, I didn't much research but so far haven't seen reports about a similar issue. Given this, would you please try readding the registry keys you mentioned above after making a backup and see how it goes?

Besides, if your environment are using proxy and the firewall is turned on, please make sure a rule is enabled for HTTP/S from the Exchange servers as this could also lead to the error shown in your image. Here's a similar thread for your reference:
Exchange App Store - "error The app couldn't be downloaded" when downloading Outlook addons


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Hi @JamiePavlovski-5208,

Just checking in to see if above information was helpful. If you have any questions or need further help on this issue, please feel free to post back.


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