Have you downloaded Trend Micro Geek Squad on your windows via www.trendmicro.com/bestbuypc official? But facing error code 311 with your setup? Then you have reached to correct blog page. The Trend Micro Error Code 311 is known as Trend Micro WFBS Error 311, technically. In this, WFBS 7.0 Agent failed to install the software, and so the user may face issues. Here is the discussion and solution of the WFBS Error 311, read further.


What is Trend Micro Error Code 311?

Trend Micro Error Code 311 is the WFBS Error, which is usually found in Windows 10, 8, 7, Vista, XP PC and laptops. The error message is displayed during installation or activation. The symptoms of this error 311 are generally incomplete installation, not activating the setup. There can be multiple reasons if your Trend Micro Geek Squad software is showing such errors.


What are the reasons for Trend Micro Error Code 311 occurrence?

  • Download corruption.
  • Windows registry corruption.
  • Not visiting the correct download page like trendmicrobestbuypc official.
  • If your system is heavily affected by viruses, then the error may show during installation.
  • Missing Trend Micro program-related setup files


Fix the Trend Micro Error Code 311

If your Windows PC has become slow and showing the “The WFBS 7.0 Agent failed to install” statement and the error 311, then you can fix the issue with the following methods;


Step 1: Repair Registries Linked With Error 311

  1. Go to start, search command, and move to the next step.
  2. Hit CTRL+ Shift+ Enter keys and Type “regedit” and enter it.
  3. In opened Registry Editor, choose the Error 311 associated key.
  4. From the File menu, click Export and then choose the location through the Save In button.
  5. Now, on the Filename box, write back-up file name, e.g., Trend Micro Backup.
  6. On the Export Range menu, choose the Selected branch and click Save.
  7. The fie will be saved with a .reg file extension, and the back-up file is successfully backed up of registry entry.


Step 2: Initiate a Complete Malware Scan

Sometimes the Error 311 can be the result malware infection on your PC. And so scan your PC with Malware scan so that malicious infection can be removed and trend micro can be installed.


Step 3: Clean up System Junk – Remove Temporary Files and Folders


  • Go to start, search command, and move to the next step.
  • Hit CTRL+ Shift+ Enter keys.
  • Give permission with the YES button.
  • Type “regedit” and click Enter key.
  • Disk Cleanup will calculate the space and junk on your PC.
  • Choose Temporary Files when it asks you to select categories.
  • Tick on checkboxes on the categories that you want to remove.
  • Click OK, and now you have successfully cleaned up the junk.


Step 4: Update Device Drivers of Your PC

Sometimes Error 311 caused due to outdated device drivers, which must be updated.

  • On the start menu, search, and open Device Manager.
  • Click “Expand icon” and chose the device.
  • Right-click or tap, then hold it.
  • Choose “Update Driver.”
  • It will search the driver updates, and then you can update it


Step 5: Additional steps.

  • Restored your computer.
  • Reinstall the Trend Micro Geek Squad via www.trendmicro.com/bestbuypc page associated with error 311.
  • Run the system file checker on windows. (sfc /scannow)


 Rachel joy is a self-professed security expert, she makes people aware of the security threats. Her passion is just to write about, cryptography, malware,Cyber security social engineering, internet. She writes for Trendmicro Products at