Antivirus software can interfere with RightFax operation by mistakenly identifying key executables and services as malicious, leading to unexpected service termination, loss of functionality, or missing fax pages. This article outlines recommended antivirus exclusions to ensure RightFax stability across supported versions from 9.3 to 23.4.
Symptoms of interference may include:
Missing pages in FaxUtil ("No Data Loaded")
Service Control Manager errors in Event Viewer
Deleted files under \RightFax\Image\ or other critical folders
Logs showing deletions by “System” processes during fax rendering or delivery
To prevent these issues, antivirus software should be configured with real-time and scheduled scan exclusions for the following:
| Path | Description |
|---|---|
RightFax\AdminUtils | Administrative utilities |
RightFax\AutoReply | Auto Reply service and configuration |
RightFax\Bin | Core executables for services like FaxServ, RPC |
RightFax\CapaSync | Synchronization modules (incl. Okta integration) |
RightFax\Client | EFM and FaxUtil executables |
RightFax\Database | Fax and user database utilities |
RightFax\DocTransport | Fax transport modules and Brooktrout tools |
RightFax\EDC | External Document Connector |
RightFax\EWS | Exchange Web Services connector |
RightFax\Gateways | Email gateways including SMTP, Exchange |
RightFax\INSO | Conversion engine |
RightFax\Production | Integration modules for ERPs and back-end tools |
RightFax\SAP | SAP gateway components |
RightFax\Setup | Installers and setup helpers |
RightFax\Shared Files | Licensing, conversion engines, image tools |
RightFax\SharePointApp | SharePoint integration tools |
RightFax\SNMP | SNMP alerting tool |
RightFax\WebApps | Web API and UI components |
RightFax\WorkSrv | WorkServer and Conversion Engine temp directories |
Sample from RightFax\AdminUtils:
| Executable | Description |
|---|---|
| chguser.exe | Modify user rights across groups |
| Dsender.exe | HP Digital Sender synchronization |
| FaxStat.exe | Monitors all server component health |
| MigrationMFC.exe | Migrate fax data between servers |
| RFDiag.exe | Server diagnostic tool |
| RightFaxDatabaseUpgrader.exe | Upgrades SQL databases during RightFax updates |
Sample from RightFax\Bin:
| Executable | Description |
|---|---|
| FaxServ.exe | Central RightFax service handler |
| FaxRPC.Service.exe | RPC client/server bridge |
| LicensingServer.exe | Handles RightFax licensing enforcement |
| RightFax.Api.Remoting.Service.exe | REST/HTTP API bridge |
| PortHand.exe | Queue handler for Print-to-Fax |
Full executable list spans over 100+ EXEs across multiple subdirectories. Run *.exe search in the \RightFax root to gather a complete exclusion list specific to your install.
| Path or Process | Description |
|---|---|
C:\ProgramData\RightFax\ | Runtime files, logs, and persistent settings |
C:\ProgramData\Captaris\Licensing | Licensing metadata, Rightfax.xml |
%USERPROFILE%\AppData\Local\Temp\ | Used by WorkServer and document conversion services |
C:\Windows\Temp\WORKSRVx* | WorkServer temporary processing folders |
C:\Windows\Temp\ICE | Image Conversion Engine temporary directory |
| Application | Reason for Exclusion |
|---|---|
WinWord.exe | Microsoft Word integration (Office Print) |
Excel.exe | Microsoft Excel integration |
PowerPoint.exe | PowerPoint fax integration |
IExplore.exe / msedge.exe | Web rendering via browser-based tools |
Best Practices
Always exclude .exe, .dll, and .tmp files related to fax rendering, transmission, and conversion.
Mark WorkServer, RPC, Licensing, API Remoting, and FaxServ processes as low-risk or trusted.
Verify exclusions apply to both on-access scanning and scheduled scanning tasks.
Periodically re-audit antivirus rules after upgrades, migrations, or changes to security suites.