These steps should be executed for each server in your SharePoint Farm:

1. Stop the SharePoint Timer service on each of the servers within the SharePoint farm.
    Click Start, go to Administrative Tools, and then click Services.
    Right-click SharePoint Timer Service, and then click Stop.

2. Navigate to the following folder: %SystemDrive%\ProgramData\Microsoft\SharePoint\Config
    Note: The %SystemDrive% variable relates to the drive on which Windows is installed; by default, this is the C: drive. You may find multiple folders with similarly formatted names containing files similar to 
    below; steps 4 - 8 should be executed for each of these folders.

3. Locate the folder that has a GUID as a name, such as a326e515-0047-4328-832c-02927b84d98c (mine were all 000000's)
    Note: By default, these folders may be hidden. To view hidden folders, in File Explorer, click View and check the box for Hidden Items
    Open the relevant folder and delete all files EXCEPT the Cache.ini file. (DO NOT DELETE THIS FILE)
    The folder should now only have the Cache.ini file.
    Modify the Cache.ini file by right-clicking and selecting Open With > Notepad
    Delete the contents of the Cache.ini file (example: 268861346) and replace it with 1.
    Save and exit the Cache.ini file

        Repeat for each GUID folder on a server, start the SharePoint Timer Service again.

4. Click Start, point to Administrative Tools, and then click Services.
    Right-click SharePoint Timer Service, and then click Start.

The SharePoint Timer Service will begin populating this folder and modifying the number in the Cache.ini file.