Workflow changes in SharePoint Designer not taking effect

I was using a SharePoint Designer workflow and one day I had to make some changes to the workflow. The changes were not taking any impact. After so many attempts I executed the below steps which fixed the issue.

Soltuion 1:
A quick solution is to disassociate the workflow, make changes to the workflow again and associate it back with the list.
Steps:
Go to List Settings > Workflow settings > Remove a workflow > Select Remove option from the radio button and click OK. Then open the workflow again from SharePoint designer, make some changes and click Finish, so it is associated again.
Your changes should now appear.
Solution 2:
Steps:
If workflow A is not working, create another workflow B. Create a valid any IF condition in workflow B and close the workflow. It will generate the XOML rules file. Open the XOML rules file and XOML workflow file of workflow A in notepad and copy paste the contents in the XOML files of workflow B (your new workflow). Now open your workflow B, you can see everything got copied from A. Disassociate workflow A from your list and associate workflow B.
Solution 3:
Steps:
Delete the files in from \local settings\app data\msft\websitecache and \app data\msft\sharepoint esigner\proxyassemblycache folders. This cleared things out.

Cheers !