This article will show you how to fix all All-in-One WP Migration getting stuck at 100%. For example,  All-in-One WP Migration allows you to upload up to 512 MB for free edition. If your file is less than 512 MB and the upload stucks at 100%, the solutions are as follow:

• Check PHP configuration in your hosting’s Cpanel if “UPLOAD_MAX_FILESIZE” and “POST_MAX_SIZE” are set greater than your file’s size or 512 MB. In my case, I can only set both of them to 128 MB because of my web hosting plan. You might contact your hosting company to ask for more information.

• Try to upload the migration file again. If the upload still stuck at 100%,  you need to download and install All-in-One WP Migration File Extension in your WordPress.

• Download the basic edition. Please, remember that the basic edition only allows you to upload migration files up to 512 MB.
• Go to WordPress Dashboard > Plugins > Add New > Upload Plugin > Choose File > Selected All-in-One WP Migration File Extension that you just download > Install Now.

• After the installation is finished, go to All-in-One WP Migration again. The problem should be fixed.
• This is all about how to fix All-in-One WP migration Stuck at 100%
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