R2rcertest.exe May 2026

In its genuine form, no. It is a safe Microsoft system file. However, because its name is obscure and it runs as a background process, malware authors have occasionally used similar names (e.g., r2rcertest.ex_ or placing a fake r2rcertest.exe in a temporary folder) to hide their activity.

Check if a scheduled task is launching r2rcertest.exe repeatedly: r2rcertest.exe

Disclaimer: Always be cautious when dealing with unidentified executable files (.exe). If you are unsure, it is safer to quarantine or delete the file. In its genuine form, no

r2rcertest.exe /server:rdg.company.com /user:MYDOMAIN\jsmith /password:******* /v

Expected output (success):

Attempting to connect to rdg.company.com:443
Certificate validated successfully.
Chain validation passed.
RPC/HTTPS tunnel established.
Authentication succeeded.
Test completed successfully.

Failure output may indicate: