Solved Cannot Uninstall v15

[SpecialK]

I'm trying to uninstall v15 (latest ver.) so that I can install v16. The computer is Windows 10 Pro. I followed the instructions to backup the current configuration to a location outside of the v15 folders. I put my backup in c:\user\Documents. After backup, I go to Programs and Features. I double click to uninstall. I get the first dialog box saying that install is starting. I get to the second dialog box asking to click Next to uninstall. I can't click Next, as it is greyed out. I can only click Back or Cancel. I have tried this numerous times, both with 3CX services running and stopped. I wait 10-15 minutes but the Next button never changes so that I can click it. Yes, I do have full admin priv on this computer.

I have done many 3CX upgrades and have never run into this problem. I simply cannot uninstall v15 3CX to then install v16 and restore from backup.

 

[JohnS_3CX]

Hi @SpecialK

Try rebooting the Windows 10 system in Diagnostic Mode, and then try to uninstall again.

1.) Run: msconfig, select Diagnostic Startup, apply and reboot
2.) Try uninstalling now
3.) When done, run msconfig again and select normal startup then apply and reboot.

 

[SpecialK]

1. Diagnostic mode didn't work
2. Hidden Administrator account didn't work
3. Revo Uninstaller didn't work
4. Microsoft Install/Uninstall Diagnostic Repair Tool DID work

 

[JohnS_3CX]

Hi SpecialK

I'm glad it was resolved, thanks for sharing your solution