Hi,
Uncomment''skip-grant-tables'' is not the solution, there is no more access authorization control, no more password request, in short, no more security access to your data.
This possibility exists with MySQL in the event of loss of the root password or accidental deletion of the root user or untimely modification of root privileges and should only be used for these cases and in no way because access to PhpMyAdmin is not granted.
> Why would someone use the 32-bit over the 64-bit?
There are cases where some PHP extensions or Apache modules do not yet exist in 64 bit and that is why, in very special cases, you have to use Wampserver 32 bit with a 64 bit Windows.
However, as long as you do not use functions supported only in 64 bit, such as a Unix timestamp valid after 2036 or files larger than 2 GB, you can easily use Wampserver 32 bit on a 64 bit Windows.
As far as I'm concerned, having a dual boot with Windows 7 Pro 64 bit and Windows 10 Pro 64 bit, I have four versions of Wampserver, a 32 bit version and a 64 bit version for each system.
You can, without any problem, have a 32-bit and a 64-bit version of Wampserver on the same system, as long as you do not launch them simultaneously.
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Wampserver install files & addons