SonicWall Firewall down

We have a SonicWall TZ170 that has a connection to the internet no problem, however, Site-To-Site VPN is down. After restarting the device, communication between the 2 sites are reinstated for about 2 minutes, and the two locations can ping each other. After 2 minutes, Request is timed Out.

Both sites use the SonicWall TZ170. What could be causing this, need help ASAP, thanks.
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Kamran ArshadConnect With a Mentor IT AssociateCommented:

What are the errors in the syslogs?
pzozulkaAuthor Commented:
Called SonicWall Support, and they couldn't figure it out either. They suggested a firmware update, and that fixed the problem for now. Syslogs is a good recommendation, found couple errors with the VPN in there. Thanks.
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