Installation, Upgrade, and Import Support

1206 topics in this forum

1. Update WHMCS from 8.13.1 to 9.0 Critical Error --> Smarty: undefined extension class 'Smarty_Internal_Method_Get_Template_Vars' <--

   By SkyHost Networks, January 31
   • 6 replies
   • 406 views
   • 
   • Mytihost
   • February 3

2. Upgrade from WHMCS 8.13 to 9 doesnt clean up vendor Folders

   By ptomter, January 24
   • 2 replies
   • 347 views
   • 
   • ptomter
   • January 25

3. SMTP Passwordless issue

   By Marwan9090, January 20
   • 1 reply
   • 201 views
   • 
   • RadWebHosting
   • January 25

4. old WHMCS update process planning

   By Walther, December 17, 2025
   • 3 replies
   • 950 views
   • 
   • zomex
   • December 22, 2025

5. Update Error

   By hmaddy, December 1, 2025
   • 0 replies
   • 612 views
   • 
   • hmaddy
   • December 1, 2025

6. Full Support

   By romerositios, November 4, 2025
   • 2 replies
   • 564 views
   • 
   • wtools
   • November 30, 2025

7. About email verification challenge for newly register client

   By Sudipto Mahmud, November 9, 2025
   • 2 replies
   • 823 views
   • 
   • wtools
   • November 30, 2025

8. Upgrade Error

   By hmaddy, November 21, 2025
   • 2 replies
   • 639 views
   • 
   • wtools
   • November 30, 2025

9. HOW TO UPGRADE SQL FOR CPANEL

   By BABYKEY, October 28, 2025
   • 1 reply
   • 629 views
   • 
   • RadWebHosting
   • November 4, 2025

10. Update Doubts

    By hmaddy, October 24, 2025
    • 1 reply
    • 750 views
    • 
    • WHMCS SamP
    • October 26, 2025

11. Problem with upgrading WHMCS

    By georgiathomp, October 20, 2025
    • 0 replies
    • 384 views
    • 
    • georgiathomp
    • October 20, 2025

12. SupportPal -> WHMCS

    By slim, May 30, 2025
    • 8 replies
    • 2.7k views
    • 
    • AMateos
    • October 15, 2025

13. WHMCS Installation with utf8mb4 Database - Potential Issues & Best Practices

    By centos777, October 15, 2025
    • 3 replies
    • 834 views
    • 
    • centos777
    • October 15, 2025

14. which files to use to update whmcsdata/cron/cron.php

    By Madumi, September 3, 2025
    • 3 replies
    • 6.5k views
    • 
    • Madumi
    • September 7, 2025

15. Installation gives 404 after step 4

    By NECS, July 31, 2025
    • 1 reply
    • 1.3k views
    • 
    • WHMCS John
    • August 26, 2025

16. Update failed ERR 2

    By ROQ, July 21, 2025   

    • ERR 2
    • 4 replies
    • 1.5k views
    • 
    • bear
    • July 21, 2025

17. joomla WHMCS Client Login for Joomla

    By rcartists, July 15, 2025   

    • Installation Upgrade
    • upload
    • (and 1 more)

      Tagged with:

      • Installation Upgrade
      • upload
      • whmcs
    • 1 reply
    • 982 views
    • 
    • rcartists
    • July 15, 2025

18. woocommerce to whmcs

    By Muneef, May 27, 2025
    • 1 reply
    • 2.1k views
    • 
    • GOVAIO
    • June 19, 2025

19. Captcha fails on admin

    By pmtech, June 14, 2025
    • 1 reply
    • 1.1k views
    • 
    • pmtech
    • June 14, 2025

20. Update Failed: Files and database are already up to date-WHMCS 8.13.1

    By Sudipto Mahmud, June 11, 2025   

    • update
    • 2 replies
    • 1.2k views
    • 
    • WHMCS John
    • June 13, 2025

21. How to disabled Automatic Updater? 1 2

    By yggdrasil, October 12, 2016
    • 31 replies
    • 15.2k views
    • 
    • Adaclare, LLC
    • June 13, 2025

22. About latest security security vulnerabilities

    By vikingo, June 4, 2025
    • 4 replies
    • 2.4k views
    • 
    • bear
    • June 4, 2025

23. Why Whmcs Not Install In VPS Ubuntu

    By Muhammad Haroon, June 3, 2025
    • 1 reply
    • 1.1k views
    • 
    • WHMCS John
    • June 3, 2025

24. Something went wrong and we couldn't process your request

    By Negar, May 13, 2025
    • 2 replies
    • 1.3k views
    • 
    • Negar
    • May 21, 2025

25. Unable to Login as Client using version 8.13

    By Damo, May 12, 2025
    • 8 replies
    • 2.1k views
    • 
    • Saroha
    • May 19, 2025