Here are the details of a MS support call related to this bug.
Case # SRX060517602973
416-246-5580 x5373
v-11c0hu [at] mssupport.microsoft.com
Problem: Cannot delete a folder named “Forms” in a subfolder in a Document Library.
Solution (workaround): Delete the parent folder. This Bug may be fixed in the next release of SharePoint.
Email…
Dear Kevin,
It was my pleasure working with you trying to delete your Forms folder
of a sub directory of a document library. Based on our recent
communication I would like to consider this issue resolved. I’ll close
the case at this time. If you find that the issue has not been fully
resolved, please notify me and I will reopen the case for more work. I
am providing you with a summary of the key points of the case for your
records. If you ever have any questions please feel free to call me. My
contact information is below.
As discussed during our phone conversation SharePoint has been designed
to prevent the deletion folders bearing the name of ‘Forms’. By
default, SharePoint places a system folder for itself at the root level
of all document libraries with the name ‘Forms’. This folder is
essential in that it holds the different views which are used by each
document library; for that reason it is protected from accidental
deletion. Unfortunately, the product has not been designed to
differentiate between root and subfolders ‘Forms’ folders. This error
is a bug of which Microsoft is aware.
In an effort to help define the successful conclusion of this case, I
have put together the following Case Resolution Agreement. Please
review the following and ensure that we have an understanding of what
constitutes a successful resolution of your case with Microsoft Product
Support.
—————————————————–
CASE RESOLUTION AGREEMENT:
—————————————————–
This case will be resolved when I properly explain the reason why you
are not able to delete ‘Forms’ folders made under a subfolder in a
Document Library. (This is an ongoing issue that Microsoft is aware of
at this time.)
Before I close your case, I would like to verify that you are very
satisfied with the service you received from Microsoft Enterprise
Platforms Support regarding this issue. Please let me know if there is
anything I or my manager David Kileeg
(v-11davk@mssupport.microsoft.com) can address to ensure you are happy
with the overall service I provided.
Best Regards,
Colin Hughes-Jones