ReSharper's Network Activity
ReSharper may use your network connection for several purposes.
Description and Configuration
Looking for updates
ReSharper can detect available updates and suggest to download new versions.
Sending out feedback
ReSharper can collect and send out some information that helps us find bottlenecks and improve the quality of the product. All information is sent anonymously.
Downloading PDB files
In order to navigate to source code that is located on a symbol server, ReSharper may need to download PDB files first.
Searching and installing ReSharper extensions
By default, ReSharper enables the external package source (https://resharper-plugins.jetbrains.com/) for browsing and installing extensions. If necessary, you can disable this source and/or add your own local sources on the page of ReSharper options.
Downloading NuGet packages
ReSharper needs Internet connection to search metadata of NuGet packages when you are using NuGet Browser window.
Verifying license information
ReSharper may use your network to check for duplicate licenses or to obtain a license from the license server. For more information, see Specifying License Information.
Normally, no additional modifications in the firewall configuration are needed. In case of any difficulties, adjust firewall settings so that devenv.exe can access the network. You can also adjust Web proxy settings for ReSharper's Internet connection on the page of ReSharper options.