rpc server unavailable

Hi, we are having with our small business server 2011 where it seemed like every saturday the resources become unavailable on the server and we would have to reboot for Monday start of business.  Then it happen again yesterday.  It seems like it runs out of resources as I'm writing to you then goes back to normal at the very least.  Like my RDP session temporary disconnects then resumes but for the most part when it's down, the server down, down.  Like we try to get into a RDP session or connect to the shares or view email from outlook and they are all disconnected.  The server is still visibly up but it needs to reboot to fix things.  Also, we try to use the manage computer option to remote in and it says "RPC server unavailable"  Please help!
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snoopaloopAsked:
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snoopaloopConnect With a Mentor Author Commented:
I think a windows update fixed it.
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smckeown777Commented:
Have you run the 'Fix My Network' in SBS Console

SBS Console - Network - Connectivity - Fix My Network(right hand column)

Run that and report what is finds

Also post output of

ipconfig /all

from the server

Is this a new build? Or how long has server been up and running - or how long this issue been around?
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snoopaloopAuthor Commented:
Nope.   I will try next time it goes out.  The server has been around for like 8 months.  The issue is 2 weeks old.

 Connection-specific DNS Suffix  . :
 Description . . . . . . . . . . . : Broadcom NetXtr
 Physical Address. . . . . . . . . : E0-DB-55-03-50-
 DHCP Enabled. . . . . . . . . . . : No
 Autoconfiguration Enabled . . . . : Yes
 Link-local IPv6 Address . . . . . : fe80::14b9:a052
 Link-local IPv6 Address . . . . . : fe80::f37e:7927
 IPv4 Address. . . . . . . . . . . : 10.68.50.200(Pr
 Subnet Mask . . . . . . . . . . . : 255.255.255.0
 Default Gateway . . . . . . . . . : 10.68.50.253
 DHCPv6 IAID . . . . . . . . . . . : 249617237
 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-17-

 DNS Servers . . . . . . . . . . . : fe80::f37e:7927
                                     10.68.50.200
 NetBIOS over Tcpip. . . . . . . . : Enabled
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smckeown777Commented:
Run the Fix My Network now...no need to wait until it goes out...want to see if there are underlying issues that need fixed

ipconfig looks all ok
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snoopaloopAuthor Commented:
it says it could not configure the router and something about the exchange smtp ports.  These are not issues and unrelated to the problem.  Any other ideas?
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smckeown777Commented:
Cool...

This happens EVERY Saturday? What tasks are running at that time?
2 weeks ago - what was installed? Updated? Changed? Anything?
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smckeown777Commented:
Also when it does lock up - and you reboot - what shows up in Event viewer? App and System event log - that's the starting point to see what is being reported
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snoopaloopAuthor Commented:
The server actually doesn't freeze.  The network resources are no longer available.  My coworker didn't bring up anything in the event log but I'll check next disconnect.
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smckeown777Commented:
Ok, you didn't answer my other questions...

This happens EVERY Saturday? What tasks are running at that time?
2 weeks ago - what was installed? Updated? Changed? Anything?

If this happens at a REGULAR time each week that points to a task running(backup for instance) - can you confirm that nothing is scheduled to run on Saturdays?

If this started 2 weeks ago that usually means something was changed...or something broke(again event viewer is your help here as it should show multiple issues - especially if you are getting 'rpc unavailable')

What AV have you installed on it?
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snoopaloopAuthor Commented:
Nothing was installed, updated, or changed that triggered it.  It's currently not disconnecting clients from their resources at length where we are getting calls.  Nothing shows up in the event viewer that indicates something fishy.  Eset admin console is installed along w the file server protection.
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snoopaloopAuthor Commented:
No other resolution worked.
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