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Unable to synchronize containers

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I have one Windows and one MacBook machine and Firefox on both. Both are signed in to my Mozilla account. On the Windows machine I have 5+ containers, these containers never sync to my MacBook Firefox. I have signed out of all machines, including an iPad and iPhone. Nothing has worked over multiple months. Note that at some time in the past the containers did sync.

The MacBook is on Sonoma 14.5, and FireFox 128.0. The Windows is Windows 10 Pro and FireFox 128.0.

Please help.

I have one Windows and one MacBook machine and Firefox on both. Both are signed in to my Mozilla account. On the Windows machine I have 5+ containers, these containers never sync to my MacBook Firefox. I have signed out of all machines, including an iPad and iPhone. Nothing has worked over multiple months. Note that at some time in the past the containers did sync. The MacBook is on Sonoma 14.5, and FireFox 128.0. The Windows is Windows 10 Pro and FireFox 128.0. Please help.