Special char (Eszett) bug in Windows File History (event 201)

The windows file history can stop silently (!!!) with the event 201. Some people assume that is caused because of non-ascii chars or to long path names. But I liked to know exactly what causes the problem.

I tested 2 days and now I found the reason. If you have a file named "tesst" and another file called "teßt" (Eszett)  in the same folder then the file history does not work anymore:

Maybe some of the moderators can forward this bug to the responsible Microsoft department?

This bug is not present for files like "tést" and "test". But its maybe with other special chars in different Windows Language Versions (I use German). All tests I did:

https://www.maxrev.de/w10-dateiversionsverlauf-funktioniert-nicht-ereignis-201-t366119,start,10.htm#4450797

EDIT 2016/05:

Bob found the same bug with an "underlined N":

http://answers.microsoft.com/en-us/windows/forum/windows_8-files/filehistory-unable-to-scan-user-libraries-for/b43183bc-eeaa-4d1a-bda4-0ab9dcf061be?page=4&msgId=30f052ce-6e38-49e2-bf7e-c51b8672a9d5

"I was getting Event ID 201: "Unable to scan user libraries for changes and perform backup of modified files for configuration" until I finally narrowed it down to a file that had a bad filename. The filename had an underlined n. I don't know how a filename can have or get an underlined letter."

 

Question Info


Last updated January 28, 2018 Views 285 Applies to:

Hi Marc,

Thank you for posting in Microsoft Community.

I suggest you to follow the Steps below and back up file history.

Method 1:

1. Turn it off in the File History control panel
2. Close the control panel
3. Go to your filehistory directory C:\Users\[USERNAME]\AppData\Local\Microsoft\Windows\FileHistory and set aside the Data and Configuration directories (Check the event for the exact directory location)
4. Open File History control panel

5. Reselect the backup disk

Method 2: I suggest you to restart these services below.

1. Press Windows key + R and type services.msc

2. Look for Volume shadow copy service and Background intelligence services and restart the services.

Hope this information is helpful. Please do let us know if you need further assistance, we’ll be glad to assist you.

 

Pavan N

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Not helpful.

I asked for forwarding this bug report.

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Someone found this bug, too:

http://www.winfuture-forum.de/index.php?showtopic=200267

P.S. he found it in Windows 8 in 2012!

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Any chance of getting this bug forwarded to the responsible microsoft department?

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MG

Perhaps you are unaware that this is a peer to peer site staffed mostly by volunteers who have little or no contact to Microsoft.  I doubt that anyone who is reading this thread has the ability to do that.

Your best bet is to use the feedback app in win 10 to voice your feedback.  The teams that are developing win 10 actually read them.

Cat herder
Windows Insider MVP
MVP-Windows and Devices for IT
http://www.zigzag3143.com/

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