Installation, Upgrade, and Import Support

1208 topics in this forum

1. Migration to new host

   By Anjina Parvin, March 7
   • 3 replies
   • 719 views
   • 
   • LittleCreek
   • March 14

2. Update Error

   By hmaddy, December 1, 2025
   • 4 replies
   • 1.2k views
   • 
   • joeroot6543
   • March 13

3. Illegal invoice changes

   By ju5t, June 5, 2018
   • 24 replies
   • 19.3k views
   • 
   • Damo
   • February 23

4. Bug: When using empty 'regions' in s3 storage and upgrading, you'll run into issues

   By twhiting9275, February 17
   • 2 replies
   • 3.6k views
   • 
   • twhiting9275
   • February 19

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

   By ptomter, January 24
   • 3 replies
   • 856 views
   • 
   • BENELUX
   • February 11

6. 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
   • 1.1k views
   • 
   • Mytihost
   • February 3

7. SMTP Passwordless issue

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

8. old WHMCS update process planning

   By Walther, December 17, 2025
   • 3 replies
   • 1.3k views
   • 
   • zomex
   • December 22, 2025

9. Full Support

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

10. About email verification challenge for newly register client

    By Sudipto Mahmud, November 9, 2025
    • 2 replies
    • 1k views
    • 
    • wtools
    • November 30, 2025

11. Upgrade Error

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

12. HOW TO UPGRADE SQL FOR CPANEL

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

13. Update Doubts

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

14. Problem with upgrading WHMCS

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

15. SupportPal -> WHMCS

    By slim, May 30, 2025
    • 8 replies
    • 3.1k views
    • 
    • AMateos
    • October 15, 2025

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

    By centos777, October 15, 2025
    • 3 replies
    • 1.2k views
    • 
    • centos777
    • October 15, 2025

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

    By Madumi, September 3, 2025
    • 3 replies
    • 6.7k views
    • 
    • Madumi
    • September 7, 2025

18. Installation gives 404 after step 4

    By NECS, July 31, 2025
    • 1 reply
    • 1.6k views
    • 
    • WHMCS John
    • August 26, 2025

19. Update failed ERR 2

    By ROQ, July 21, 2025   

    • ERR 2
    • 4 replies
    • 1.7k views
    • 
    • bear
    • July 21, 2025

20. 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
    • 1.2k views
    • 
    • rcartists
    • July 15, 2025

21. woocommerce to whmcs

    By Muneef, May 27, 2025
    • 1 reply
    • 2.4k views
    • 
    • GOVAIO
    • June 19, 2025

22. Captcha fails on admin

    By pmtech, June 14, 2025
    • 1 reply
    • 1.3k views
    • 
    • pmtech
    • June 14, 2025

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

    By Sudipto Mahmud, June 11, 2025   

    • update
    • 2 replies
    • 1.4k views
    • 
    • WHMCS John
    • June 13, 2025

24. How to disabled Automatic Updater? 1 2

    By yggdrasil, October 12, 2016
    • 31 replies
    • 15.7k views
    • 
    • Adaclare, LLC
    • June 13, 2025

25. About latest security security vulnerabilities

    By vikingo, June 4, 2025
    • 4 replies
    • 2.7k views
    • 
    • bear
    • June 4, 2025