Hi everyone,
I am now using Solidwork 2017 SP1 x64, and I have some troubles with my toolbox, its empty 
I made sure that my toolbox are still there.
I found someone who had the same problem, but his version is 2016 and i dont understand clearly the solution down here (the redlines are what i dont understand )
Please show me the way to fix it, thank you very much <3 <3 <3
Dear Bui Hung,
I have encountered the same problem with you, eventually, I resolved this problem. Here are the methods I used.
My computer had installed the SolidWorks 2013 x64 version when I installed the SolidWorks 2017 SP1, so I installed the 2017 version without uninstalled the 2013 version. When I opened the SolidWorks 2017 after installation, I found the Toolbox was empty (same as the screenshot you postered) and nearly no solutions on Google.
Firstly, Without any changes to the C:\SOLIDWORKS Data folder, I reinstalled the SolidWorks 2017 and choose "Repair the SolidWorks 2017", but eventually it didn't work. The Toolbox was still not working well.
Then I Deleted all the files in the C:\SOLIDWORKS Data folder, then I copied the 'browser', 'lang', 'updates' folders, ‘ToolboxStandards.xml’ and 'ToolboxVersion.dat' files (these folders and files were of my SolidWorks 2013 version) to the C:\SOLIDWORKS Data folder. When I opened SolidWorks 2017 again, I found that the software noticed some errors, and Toolbox still couldn't work well.
After that, every time I opened the SolidWorks 2017, it would notice me errors related to the Toolbox. I decided to reinstall the SolidWorks 2017 and choose "Repair the SolidWorks 2017" ( please close your computer network before reinstallation). Marvelously, I found the problem of the toolbox has been resolved when I opened the SolidWorks 2017 again.
I suggest you try to delete the files in the C:\SOLIDWORKS Data folder, and reinstall the SolidWorks 2017 (choose "Repair the SolidWorks 2017").
I am not sure whether this method can work well with your SolidWorks 2017, but I wish these words may do help to you!
Have you checked to see if the Toolbox is marked as active in the Add-Ins menu (Tools, Add-Ins)? They are not turned on by default.
Had the same problem with SW2018, my Toolbox folder is in PDM Vault.
Here's how I solved the problem:
1. Quit SW.
2. DELETE ToolboxFiles.index in BROWSER directory.
3. Relaunch SW.
I think somehow the index file was not configured correctly and deleting it force SW to regenerate a new file.
Can you check the path for toolbox path here and share the picture like below: