NovaBACKUP PC/Server/BE v19.x and newer
Error 800706BE "The RPC Server is unavailable"
Error 800706BA is a standard Windows error with many causes. It most often refers to Microsoft COM Internet Services (CIS) on the Distributed Component Object Model (DCOM) client call RPC_S_SERVER_UNAVAILABLE; the RPC server is unavailable (Windows Event ID 1722). It is when a RPC query times out and error 800706BA is the result. The following steps have
been shown to resolve this issue:
Retry the backup job after a period of time has elapse
The error can occur when the system is under high CPU or memory usage by other services or applications.
Wait until those applications finish and attempt the backup.
Verify Distributed Component Object Model (DCOM) settings
1. Click Start > Run.
2. In the Open box, type DCOMCNFG.EXE and press <Enter>
3. Expand Component services.
4. Expand computers.
5. Right click the local computer and choose Properties
6. Select "Default Properties"
7. Activate the "Enable Distributed COM on this computer" check box
8. "Default Authentication Level" => select "Connect".
9. "Default Impersonation" => select Identify.
Restart RPC service
Make sure that the remote procedure call (RPC) services are started on the system.
1. Click Start > Run.
2. In the Open box, type services.msc, and then click OK
3. Do the following:
A· Make sure the Remote Procedure Call (RPC) Service is started and set to start automatically
a. Right click on Remote Procedure Call (RPC)
b. Click Properties
c. Select Automatic for the Startup Type field
d. Click START (if not started) for Service status.
e. Click OK
B· Make sure the Remote Procedure Call (RPC) Locator service is started and set to start automatically
a. Right click on Remote Procedure Call (RPC) Locator
b. Click Properties
c. Select Automatic for the Startup Type field
d. Click START (if not started) for Service status.
e. Click OK
Stop Anti-Virus Services and disk monitoring tools.
Applications that make continuous read and writes to the drive you are attempting to backup and or if
these applications establish a security level lock to the drive at the time of attempting to create
a snapshot imaging during the recovery point imaging process could generate this error. Take
precautions when disabling security software when you create a backup.
Prior to next schedule backup, at the next schedule down time of the system,
perform a complete shutdown of the system.
Reboot target server
Verify DNS settings when backing up to a network share location
Backup Exec System Recovery will report this error occurs when DNS servers are not configured properly
when backing up to a network share. Possible network connectivity issue usually DNS is not set properly.
If the above suggestions do not correct this error, perform the following steps:
1. Verify that address for the configured preferred DNS server on client system on the client is valid and reachable.
2. Use NSLOOKUP and IPCONFIG /ALL to display DNS Server settings.
Check the TCP/IP configuration for a local incorrect DNS Server settings.
Local settings will overwrite settings from the DHCP Server.
By deleting the local DNS setting and switching to auto configuration DNS server settings should be corrected.
3. Check if the storage and client systems have DNS entries. If not make sure dynamic updates are enabled on the
DNS server and schedule a restart of the netlogon server on each DC.
4. Check for symptoms where new Global Domain Users cannot not be added to a Local Group in Computer Management
-> Local Users and Groups -> Groups. Correct this by configuring the network adapters to point to the correct
DNS servers on the network.
Verify that the client is pointing to the DNS server on same domain as the share.
5. Make sure the authoritative time server is set correctly.
6. Verify that the client system can ping the storage system by fully qualified domain name if not from a command
prompt use the ipconfig /flushdns and /registerdns and try again.
7. Make sure that if the client system has multiple adapters, the adapter that resolves to the storage location
is listed first in the adapter binding order in the Advanced settings of Network and Dial-up Connections.
Otherwise, DNS resolver may use the DNS server for the adapter listed first that may not resolve to the
storage location correctly.
Microsoft articles that may be helpful:
https://social.technet.microsoft.com/Forums/en-US/a8b8fe72-7e85-4e3d-beba-19c84c620dc8/the-backup-failed-the-rpc-server-is-unavailable-0x800706ba?forum=windowsbackup
You may find additional articles by searching the web for the error code.
AMo