Windows Backup Error code 0x8100002f
Setup: Have Win7 RC1 on my c: drive and have changed the settings so that all my data ( documents/pics/videos/music etc ) are on a different physical drive ( E: drive ). I have formattedanother drive and calle dits X drive and allocated it that number as well. X drive is an external hard drive connected via esata .Now I have selected X drive as my backup drive but when it runs it comes up with a message about Backup Fails etc but when you close this message box the backup is running. When its finishs I get an error about some problem and files been skipped. Also the notification flag has a message "check your backup results " and fshows some files that were skipped :Backup encountered a problem while backing up file C:\Users\Bill\Documents. Error:(The system cannot find the file specified. (0x80070002))Backup encountered a problem while backing up file C:\Users\Bill\Pictures. Error:(The system cannot find the file specified. (0x80070002))Backup encountered a problem while backing up file C:\Users\Bill\Videos. Error:(The system cannot find the file specified. (0x80070002))So basically I think moving the Docs/Pics/Videos to another drive is causing these above errors but why does it say the backup will not be run and then runs.
May 27th, 2009 8:53am

wls54,Are any of the drives in question 'Dynamic' drives?
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May 28th, 2009 2:48am

Hi,Thanks for trying Windows backup. Actually, what happened in your case is that the backup succeeded but ended up skipping some locations because it could not find them. We backup Documents, Pictures, Music and Videos through user libraries. Since you have changed the location of these folders, the libraries won't recognize them unless you navigate to the corresponding library through the Explorer UI. For example, to navigate to the Documents library, click on the Windows icon and click on"Documents" to the top right. Can you make sure you navigate to each library atleast once?Once you do that, the right locations will be updated and backup will start backing up the new locations. Please try this out and let me know if it works for you.Thanks,Sneha [MSFT]
May 28th, 2009 6:16pm

Sneha, I have the same problem as wls54 above - I have moved all my libraries to the D drive; Windows is on C. I am backing up to F. And I have navigated to each library on D but I still get the error. Is Backup doing the backup anyway but then spitting out the error? Or is it failing to back my libraries on D up at all? I think when I adjust the location of a library folder like "Documents", Windows Backup shouldn't need me to navigate to each folder first - it should reflect the change automatically, shouldn't it? Tim
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May 30th, 2009 2:35am

Well have did what you suggested and just maybe the problem was caused by two locations ie. the public files still on c: driveAnyway I have deleted that location anf hopefullylater on I will check it outand see how it goes
May 30th, 2009 8:02am

Well tried again and same problem. I think I will just save /backup the files that I want in future and not bother with Windows Backup
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May 31st, 2009 6:03am

Regret the inconvenience caused. I agree that this is not the best behaviour. This is a bug wherein the location stored in the library gets updated only when the library is actually opened in Explorer. Just to confirm, you need to navigate to the library and not the constituent folders. Can you confirm whether you did this? For example, to navigate to the Documents library, click on the Windows icon and click on"Documents" to the top right; you do not need to navigate to the "My Documents" folder. Please let me know the result.Thanks,Sneha [MSFT]
May 31st, 2009 12:19pm

Just to confirm, you need to navigate to the library and not the constituent folders. Can you confirm whether you did this? I am having this problem with my backup, except it only gives me the error for my Documents folder. I moved all of my user folders from C:\Users\username\ to a folder on a separate partition D:\username\. After running the backup, it says "The backup completed but some files were skipped." When I click options and error details, the error code is 0x8100002F. When I click "view skipped files" it opens a notepad window with the following: "Backup encountered a problem while backing up file C:\Users\username\Documents. Error:(The system cannot find the file specified. (0x80070002))." I can confirm that I indeed browsed to my Documents library, not just the folder on the D: drive, and this did nothing to remedy the problem.
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June 5th, 2009 2:19pm

On my desktop the backup gave me a similar error, but this time with the Documents, Music and Videos folders. Again, browsing to the libraries did nothing to fix the problem. This is the error log I received: Backup encountered a problem while backing up file C:\Users\username\Documents. Error:(The system cannot find the file specified. (0x80070002)) Backup encountered a problem while backing up file C:\Users\username\Music. Error:(The system cannot find the file specified. (0x80070002)) Backup encountered a problem while backing up file C:\Users\username\Videos. Error:(The system cannot find the file specified. (0x80070002))
June 10th, 2009 6:10am

Hi,Looks like the updatedlocations of yourfoldersare not getting reflected in your libraries. Wewill investigate on theissue. Meanwhile, as a workaround,please trythe following:1. Click on "Change backup settings" from troubleshoot dialog2. Expand the user node whose libraries aregetting reported as skipped.3. Deselect the librarythat is causing the issue.4. Expand the"Computer" node in the treeview andselect the redirected location of the folders.5. Save settings.You should not hit the skipped files issue after this. Hope this helps.Thanks,Sneha [MSFT]
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June 11th, 2009 11:22am

Thank you for your response. This is actually exactly what I did myself as a workaround. But this bug should definitely be fixed before RTM. I don't know where it's getting confused because the libraries are being updated to reflect the new locations. They point to the proper location on the new partition and there is no longer any reference to the default location on the C: drive. Yet the backup fails to backup the new location because the old location doesn't exist. It's only for some of the moved user folders and it doesn't always occur when the folders are moved. But it does seem to only be a problem with user folders that are part of a library. I tried moving my Documents folder back to its default location and moving it again, but this didn't change anything either.
June 11th, 2009 12:31pm

Having the same problem with Win 7 Pro.. My log started with: Windows Backup skipped C:\ because is it on corrupted drive C:\. (does this have something to do with the fact that I installed Win 7 over the RC from Windows GUI (so no format?)) and then it had libraries etc listed.. I lost the log because I did a manual back after it which seems to go through ok. So this issue only exist when doing a scheduled backup.. weird? Definately not fixed.
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October 12th, 2009 7:35pm

Hi natiainen,Looks like your C:\ had some bad clusters. Could you run chkdsk /R on C: and see if it flags any errors?And when you say your manual backup went through OK, can you tell me what steps you took to perform a manual backup?Thanks,Sneha[MSFT]
October 14th, 2009 8:48pm

Hi Sneha, I ran chkdsk and it found no problems. I also checked the log from the earlier chkdsk (12.10.09) I did when I had the backup problem and no problems there either. By manual backup I just went to the Backup and Restore center and did "Back up now" with the same backup settings as the scheduled ones. This is not the first time the scheduled had this failure but this time I decided to google the problem instead of just doing a manual backup.
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October 14th, 2009 9:33pm

Hi natiainen,It is not expected that manual and scheduled backups give different results. Can you let another scheduled backup happen and see if this behaviour repeats? If so, please pass on the contents of <<SystemDrive>>\Windows\Logs\WindowsBackup to sneham_at_microsoft_dot_com (Remove underscores and replace words with characters wherever applicable).Thanks,Sneha
October 15th, 2009 4:56pm

Sent. -natiainen
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October 18th, 2009 7:24pm

I kind of have the same error code 0x8100002f after a backup completes: Backup encountered a problem while backing up file C:\Windows\system32\config\systemprofile\Max Resource Files. Error:(The system cannot find the file specified. (0x80070002)) Backup skipped backing up F:\LAVIE BACKUP FILES\My Max as it is on the backup target. Backup encountered a problem while backing up file C:\Windows\System32\config\systemprofile\Adobe Resource Files\Adobe\Photoshop Files. Error:(The system cannot find the path specified. (0x80070003)) Backup encountered a problem while backing up file C:\Windows\system32\config\systemprofile\Web Development Resource Files. Error:(The system cannot find the file specified. (0x80070002)) Any clue on how to resolve?
November 9th, 2009 7:00am

Hi Emperium,Look at my reply @ http://social.technet.microsoft.com/Forums/en-US/w7itprogeneral/thread/52d70cd1-5ddb-4b85-9099-fdef5aae0102Thanks,Sneha[MSFT]
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November 9th, 2009 11:17am

That did the trick, no issues detected. Is there a way to view what the backup includes. I mean, say the backup only uses 30% of a 300GB harddrive. That's 90GB, but what if I had more than 90GB in the folders I chose it to backup, what gets chosen?
November 16th, 2009 7:08am

Hi Emperium,It is not possible to specify such limits as of now. If you choose to backup folders that are greater in size than available spaceon the backup disk, the backup will fail. Please read the following link on how to manage your backup space: http://windows.microsoft.com/en-us/windows7/What-backup-settings-should-I-use-to-maximize-my-disk-spaceThanks,Sneha[MSFT]
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November 16th, 2009 6:16pm

How about this? Any solution? Windows Backup skipped C:\Users\Adrian\Documents because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Public\Documents because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Adrian\Music because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Public\Music because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Adrian\Pictures because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Public\Pictures because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Adrian\Videos because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Public\Videos because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Adrian\AppData\Roaming because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Adrian\AppData\Local because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Adrian\AppData\LocalLow because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Adrian\Contacts because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Adrian\Desktop because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Adrian\Downloads because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Adrian\Favorites because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Adrian\Links because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Adrian\Saved Games because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Adrian\Searches because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Adrian\Documents because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Public\Documents because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Adrian\Music because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Public\Music because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Adrian\Pictures because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Public\Pictures because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Adrian\Videos because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Public\Videos because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Mcx1-ACA-DELL-XPS\AppData\Roaming because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Mcx1-ACA-DELL-XPS\AppData\Local because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Mcx1-ACA-DELL-XPS\AppData\LocalLow because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Mcx1-ACA-DELL-XPS\Contacts because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Mcx1-ACA-DELL-XPS\Desktop because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Adrian\Downloads because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Adrian\Favorites because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Mcx1-ACA-DELL-XPS\Links because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Mcx1-ACA-DELL-XPS\Saved Games because is it on corrupted drive C:\. Windows Backup skipped C:\Users\Mcx1-ACA-DELL-XPS\Searches because is it on corrupted drive C:\.
April 8th, 2010 12:43am

Exactly the same problem here, Windows 7 Ultimate and backup just fails every time with the same "corrupted drive C:\" errors. Running chkdsk /r does not help any.
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April 22nd, 2010 10:50am

Hi euforium and acachia_, Looks like your C: has some bad sectors. Please do the following: 1. Open an elevated command prompt (cmd -> Run as administrator) 2. chkdsk /R C: This will schedule a disk check during next reboot. 3. Reboot your machine. 4. Re-run backup. Hope this solves your problem. Thanks, Sneha [MSFT]Sneha [MSFT]
April 23rd, 2010 3:05pm

Hi Sneha, I'm getting the same error code (Error code: 0x8100002F) but the log looks like this for me: ----------------------------------------------------------------------------------------------------------- Backup skipped backing up F:\ as it is on the backup target. Backup skipped backing up F:\ as it is on the backup target. Backup encountered a problem while backing up file C:\Users\Mcx1-MARK-PC\Contacts. Error:(The system cannot find the file specified. (0x80070002)) Backup encountered a problem while backing up file C:\Users\Mcx1-MARK-PC\Searches. Error:(The system cannot find the file specified. (0x80070002)) ----------------------------------------------------------------------------------------------------------- I'm kind of just ignoring the skipping of F:\ as that is the new 1 TB external hard drive I just bought on Monday and I don't even have drive F:\ chosen as one of the drives to back up, only the C:\ and D:\ drives are set to be backed up, but I don't quite understand the system not being able to find the Contacts and Searches folders. I'm a little confused because under "Data Files" on the "Set up backup" window I have three possible boxes I can check: "Back up data for newly created users," "Mark's Libraries," and "uuid:10000000-0000-0000-0200-0022483035E8's Libraries." Mark's Libraries is obviously my library but what is that huge uuid library? Also, I don't understand why under C:\Users I have both a "Mark" directory and a "Mcx1-MARK-PC" directory. The "Mark" directory contains all the folders/files that I find when I look under my libraries via the Start button whereas the "Mcx1-MARK-PC" directory does not contain the Contacts or Searches folders, hence the error message. I don't get why Windows Backup is looking through the libraries for whatever this user directory is however, rather than just the "Mark" directory which contains all the correct files/folders. I don't really know where the "Mcx1-MARK-PC" directory came from to be honest but when I look through it in Windows Explorer, every folder within it appears to be empty, yet when I view the Properties of "Mcx1-MARK-PC" it says that its Size is 116 MB. Should I simply delete the "Mcx1-MARK-PC" directory or do you by chance have any idea what it could be or what created it? In case it helps, here's what my system is running: Windows 7 Professional Processor: AMD Turion 64 X2 TL-62 2.10 GHz RAM: 4.00 GB System type: 64-bit Operating System
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April 28th, 2010 1:00am

Hi Mark, This user Mcx1-MARK-PC is created by Windows media center. A user created like this does not have the Contacts and Searches directories. You can safely ignore this error or exclude these locations from Change backup settings wizard to eliminiate these warnings. Also the huge uuid that you see in the Change backup settings wizard is because the friendly name for the user created by Media center is unavailable. Thanks, Sneha [MSFT]Sneha [MSFT]
April 29th, 2010 7:28pm

Just to confirm, you need to navigate to the library and not the constituent folders. Can you confirm whether you did this? I am having this problem with my backup, except it only gives me the error for my Documents folder. I moved all of my user folders from C:\Users\username\ to a folder on a separate partition D:\username\. After running the backup, it says "The backup completed but some files were skipped." When I click options and error details, the error code is 0x8100002F. When I click "view skipped files" it opens a notepad window with the following: "Backup encountered a problem while backing up file C:\Users\username\Documents. Error:(The system cannot find the file specified. (0x80070002))." I can confirm that I indeed browsed to my Documents library, not just the folder on the D: drive, and this did nothing to remedy the problem. Try mklink /J "C:\Users\%username%" "D:\%username%" This will create an NTFS Junction Point to the correct folder. A junction point is basically a link on steroids. Programs trying to access the junction point will believe that they are in that folder when they are in fact in the folder linked to. This is useful whenever a program uses hard-coded directories rather than the environment variables it's supposed to use. I set up a bunch of these as a precautionary measure since I had to move a lot of files to my second hard disk as my first one is a small SSD (30GB). This won't work if you already have a folder with the link name Syntax: mklink /J <Link-Name> <Target>
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July 8th, 2011 11:44am

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