R2rcertest.exe May 2026
The following article is an informative guide on how to analyze and handle unknown executable files like r2rcertest.exe safely.
Option 3: Disable via Task Scheduler
Check if a scheduled task is launching r2rcertest.exe repeatedly: r2rcertest.exe
- Open Task Scheduler.
- Navigate to
Microsoft>Windows>RemoteDesktopServices. - Disable any task referencing
r2rcertest.
How to Investigate
If you did not intentionally download a developer tool, you should treat this file with suspicion. Here is how to verify its safety: The following article is an informative guide on
1. Check the File Location
Legitimate Windows files usually reside in C:\Windows\System32. Legitimate third-party software usually resides in C:\Program Files. Option 3: Disable via Task Scheduler Check if
- Suspicious Locations: If you find
r2rcertest.exein a temp folder (e.g.,C:\Users\[User]\AppData\Local\Temp), a startup folder, or directly on the Desktop, it is highly suspicious.
2. Check the Digital Signature Right-click the file and select Properties. Go to the Digital Signatures tab.
- Safe: It is signed by a legitimate company (e.g., Microsoft, Intel, or a specific software vendor).
- Unsafe: There is no signature, or the signature is invalid/unverified.
3. Use an Online Scanner Services like VirusTotal allow you to upload a file (or hash) to scan it against 60+ antivirus engines. This is the fastest way to get a consensus on whether the file is malicious.
Useful Scenarios
| Scenario | What to test with r2rcertest.exe |
|----------|--------------------------------------|
| New RD Gateway deployment | Verify SSL cert works before client deploy |
| After renewing cert | Confirm new cert is trusted & chained correctly |
| Clients get “SSL certificate not trusted” | Simulate server-side cert chain validation |
| RD Gateway timeout or 502 errors | Check if RPC/HTTP tunnel works |
| Troubleshooting RDS session collection through gateway | Simulate gateway auth + cert binding |