Word error "The application experienced an internal error loading the SSL libraries", while using webDav with HTTPS

Koolprasad 6 Reputation points
2022-09-16T05:58:20.447+00:00

Dear team
we have implemented WebDav using asp.net and deployed it on IIS. Now when we try to edit any file on client machine with Word 2013/2016 then word prompts
security warning as "The application experienced an internal error loading the SSL libraries"

This happens only when we deployed site with HTTPS, if i deployed it with HTTP then no issues occur, we have also SSL certificate to webDav in IIS but still error persist

Please suggest

Thanks
Prasad

Internet Information Services
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  1. Sam Wu-MSFT 7,041 Reputation points Microsoft Vendor
    2022-09-19T03:04:07.217+00:00

    @Koolprasad

    It might be because of your system does not support the TLS 1.2 protocol, you can try below steps to enable TLS 1.2:

    1. Open registry on the server by running regedit in the run window.
    2. Navigate to the below location: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols.
    3. Add the TLS 1.1 and TLS 1.2 keys under Protocols:
      • Right-click Protocols
      • Select New > Key
      • Name the key TLS 1.1
      • Similarly, create another key with the name TLS 1.2
    4. Create two keys Client and Server under both TLS keys.
    5. Create the DWORD (32-bit) values under Server and Client key as follows:
      • DisabledByDefault [Value = 0]
      • Enabled [Value = 1]
    6. Disable TLS and SSL older versions:
      • Open registry on your server by running regedit in the run window.
      • Navigate to the below location: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols
      • Now change DWORD values under Server and Client under TLS 1.0, SSL 3.0, and older SSL version keys:
      • DisabledByDefault [Value = 0]
      • Enabled [Value = 0]
      More information you can refer to this link: Enabling TLS Configuration on IIS Server.

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