I've been battling with an issue the past 3 weeks and I can not seem to find a resolution. Any help would be appreciated.
I have a Windows XP workstation (all service packs and updates have been installed) which is running as my back-up workstation. It is a member of the domain and has been for years. About 3 weeks ago - the external hard-drive which had been attached to it decided to take a crap. I have since replaced it with an External Terabyte drive. Around the same time however, the system also seemed to stop being able to access the internet. It can not get to our 'intranet' page or any external internet website. It can see other computers within my domain but can not access them (even though it has administrator rights to do so). The PC did have a static IP address and I could still access it via VNC Viewer when it stopped accessing the intranet, internet, and network resources. It's at the same time the above happens that the back-up jobs then also fail - stating it can not reach the remote agent but it's likely because it can no longer gain access to those shared drives/folders that it needs to back up because of this strange 'lack of network' access. The craziest part of this whole thing is that if/when I restart the box - all network access is working, it can get to the intranet and internet for about 24 hours - then it just happens all over again. I don't see any rhyme or reason on when or what causes it to occur. Again, I can still ping and VNC to the box. And the box itself can ping both internal and external sites - but just can connect.
Steps I've done to attempt to resolve this issue have been:
1) Performed a system restore to a previous date
2) Performed a check disk on the drive where the pagesys file resides.
3) Updated the driver for the NIC
4) Performed a GPUpdate on the machine
5) Looked for signs of an IRPStackSize issue from a way previous version of Symantec but doesn't seem to be the issue.
The 2 warning signs when this occurs are again when the computer can not access the internet/intranet. I get a page can not be displayed error. The other telling sign is that my backups start failing. If a back-up hasn't yet started it'll fail within 10 seconds that it can not access the remote computer. What's even stranger is that if a back-up is in progress, but this 'event' happens - it'll continue backing up for awhile but then it will eventually fail. When I go to edit my back-up job's - I get the error "Not Enough Storage is available to process this command" which then brings up the screen to select what I want to backup - but since I can't access any remote PC - I can't do anything because it acts like I can't see them. I've also seen the error "there are no long in servers to handle your request."....
Anyone have any ideas? This just started recently (along with the external backup) died but I can't see that affecting the 'network' issues that the box seems to be having now....