Unable to restore registry backup files

[mbolay]

I ran CCleaner. Cleaned Registry and clicked "fix all issues" . Allowed it to backup. After I finished running Ccleaner, I tried to access my bank website and it says "DNS unavailable". Since this wasn't an issue before I ran CCleaner, I assumed that something was removed that shouldn't have been removed. I found the backup files (2 of them 3 minutes apart) in C:\users\my name\onedrive\documents. I followed instructions to restore backup but I got this error: Can someone help me?

[Nergal]

Try running regedit.exe and importing it via the file menu

[mta]

and if that doesn't help, try doing it with the PC booted into Safe Mode.
and start regedit with admin privileges.

[Nergal]

It should be noted that windows and programs (such as antivirus) may recreate a registry entry wrongly removed, especially if working in large batches like having all checkmarks in registry cleaner enabled.  This may impair your ability to merge the back-up into your registry.  Always best to treat registry section is in my signature.

[mbolay]

Thank you both for your advice! I have tried everything and still couldn't get the files restored.  Nergal, I wish I had known that before, but I know now. I finally had to go into my network IPV4 properties and put in  "open DNS" . I tried every other solution I could find. ie; flushing DNS, releasing, renewing, etc. Nothing worked except using the open dns. It seems to be a little wonky but at least I can access my bank now.   I might call my ISP when I get the time and see if they can help me out with it. I had this problem a few years ago and I either called my ISP or my router manufacturer - can't recall which. But one of them got it all straightened out for me. Anyway, I sure do thank you guys for assisting me!!

[mta]

can I just add a note of caution.

reg cleaning hasn't been beneficial for many years - simply no need for it.
the only time it has helped me was once, when I had malware living in the registry.
but from a space and speed view point, cleaning the registry will give you no perceivable advantages.

and if you are on Windows 10, with it's regular updates, it is always a few steps ahead of any company trying to determine what keys in the registry can be cleaned and any side-effects.

official word on the matter from MS; https://support.microsoft.com/en-us/help/2563254/microsoft-support-policy-for-the-use-of-registry-cleaning-utilities

if you do want to go ahead with using any reg cleaner, as Nergal's sig stats - back it up first, and do it in small chunks.

[Marytheknees]

i tried running regedit but could not  find where  it is I do not see cc cleaner i see pitform but  i get an error message

[Andavari]

By default CCleaner will save all .REG backups in the Documents ("My Documents") folder, unless you've changed where it saves the backups.

1. Start > Run > RegEdit.exe

-or- via the Start Menu area Cortana/Search just type in: RegEdit

Windows should give a UAC prompt which will allow it to run it as an Administrator.

2. Then in Registry Editor ("RegEdit") click 'File > Import' and browse to where CCleaner made the .REG file backup and select it via Registry Editor (note by default Registry Editor should be pointing in your Documents/My Documents folder, so you shouldn't have to browse to anywhere), it will then attempt to import the .REG file and either tell you it was successful or failed.