Cannot save to Sharepoint

I have a drive mapped to sharepoint share. I also can access the Document library from internet explorer in Sharepoint . I used to be able to add files

But if I try to open a pdf file that is on my computer windows 7 then try to save As and select the sharepoint share, it will come up with  the error shown in the screenshot. (The document could not be saved. A file write error has occurred."

If I drag PDF from my computer to the sharepoint share, I receive the error "file name you specified is not valid or too long"

I included a screenshot about that  too
if I go to sharepoint document library  from internet browser and try to add the pdf file, it will give me error shown in screenshot.

these errors just started to popup

Any help will be very much appreciated.


Who is Participating?
Justin SmithConnect With a Mentor Sr. System EngineerCommented:
Does this happen with all file types?  Are you running up against any type of size limitation as far as SQL DB/disk space/site quota ?
jskfanAuthor Commented:
The problem is just when I copy or move a file to the sharepoint share, I still can create a new file in sharepoint share for instance right-click create new text file
I've requested that this question be deleted for the following reason:

The question has either no comments or not enough useful information to be called an "answer".
jskfanAuthor Commented:
I will do some research later…Thanks for your input
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