Hi JohnBanks4
My name is Jon and I am an independent technical adviser. Sorry to hear you are experiencing issues and I would really like to help you find a resolution.
The genuine fsavailux.exe process is a software component belonging to the most recent Windows installations. The process is signed by Microsoft and is actively being used by the Disk Check Utility, a proprietary Windows tool.
Press Ctrl + Shift + Esc to open up a Task Manager window.
Once you’re inside Task Manager, select the Processes to tab from the horizontal menu, then scroll down to the list of Background processes and locate fsavailux.exe. After you manage to locate it, right-click on it and choose Open File Location from the newly created context menu.
If the revealed location is different than C:\Windows\System, there’s a very high chance that you’re dealing with a malicious executable.
If you discover the fsavailux.exe file in an improper location, the best course of action is to perform a full virus or malware scanner.
Open up a Run dialog by pressing Windows key + R. Next, type “cmd” inside the text box and press Ctrl + Shift + Enter to open up an elevated Command Prompt. When you get to the UAC (User Account Control) prompt, click Yes to grant administrative privileges.
Once you’re inside the elevated CMD prompt, type the following command and press Enter to initiate an SFC scan:
sfc /scannow
Note: Don’t interrupt this process until the operation is complete. Otherwise, you run the risk of provoking additional logical errors.
Once the SFC scan is complete, close the elevated CMD and restart your computer. At the next startup sequence, follow step 1 again to open up another elevated CMD. After you do this, type the following commands in order and press Enter after each one to initiate a DISM scan:
Dism.exe /online /cleanup-image /scanhealth
Dism.exe /online /cleanup-image /restorehealth
Note: DISM needs a reliable Internet connection to download healthy copies that will replace corrupted items. With this in mind, ensure that you have a stable internet connection before initiating this type of scan.
After the operation is complete, restart your computer and see if the issue is resolved at the next system startup.
Hope this helps.
[Moderator Edit: Content plagiarized from: https://appuals.com/what-is-fsavailux-exe-and-should-i-remove-it/ - Please site your sources]