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Local machines must reboot to rejoin network after Sonicwall Update

By T3CHGURU ·
Hello all,

We have a TZ 180 Enhanced. On Dec 31st Dell/SW forced clients to upgrade from version 3.2 firmware to 4.2.1.7-17e. I didn't know about this forced update until 2 weeks ago when I rebooted my Sonicwall and only 5 machines could get online.

I upgraded the firmware with a Sonicwall rep in live chat. I exported my SW settings not once, but twice (just in case!!) and proceeded to install the firmware. The firmware upgrade went afoul and reset all settings on me (go figure). I attempted to import my backed up settings (yay! I made two backups!!) and the first one failed to load, the second one was corrupt. I tried importing multiple times, restarting the SW, etc... NOTHING. I called Charter to get the DNS settings so we could get back on WAN and I rebooted the server and all machines.

The next day a couple people said they were getting disconnected from a mapped network drive. I looked and the networked drive asked for authentication. I inputted user/pass and it failed to authenticate immediately. Note: all machines are on a domain, all machines/users worked perfectly before Sonicwall update). I tried the admin user/pass for the server, nothing would let me in. I rebooted the machine and only after a reboot could I login to the domain and access the network drive. Next day, SAME THING happened. This is happening with 5-6 computers at random times of the day. Reboots fix the issue.

Then tonight I get an error when accessing the network drive that says: The system detected a possible attempt to compromise security. Please ensure that you can contact the server that authenticated you.

I reboot the PC('s) and all is well again.

NOTHING beyond Sonicwall has changed.

The server is a Win Serv 2003 SP2.
Machines are automatic DHCP.

Sonicwall now has default settings.

I'm stuck and need help

Sonicwall no longer supports my device = no support from them

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