O/S is windows xp home with sp2. All activity is done under a user account with admin privileges. Symptoms are as follows:
1) Tried to install H&R TaxCut 2005 and after the software had apparently installed, got the message, "You do not have access to make required system configuration modifications. Please return from an administrator account."
2) When following steps suggested by Zonelabs for uninstalling their basic firewall, I exported the registry and attempted to import it back in to verify the export, and received the message, "Cannot import filename.reg (where filename was the name I gave) Some keys are open by the system or other processes." Regedit was the only program I was running. I tried the export/import twice and received the same message.
3) When trying to install free version of Registry Mechanic v220.127.116.11, received the message, "C:\windows\system32\scrrun.dll unable to register dll/ocx: dll register server failed; code 0x80004005 unspecified"
4) When trying to run a video using windows media player, I get prompted that windows needs a codecs, which when I let it try to download and install on-demand, it says there was an error when trying to install the codecs.
Any suggestions, troubleshooting tips, tools, etc would be appreciated. Thanks.