Windows 10: "Directory name is invalid" : Can't access any file on the network

Hi All, hope you're well. My first subscription here, I see it's quite a busy forum so I'm sure I'll find interesting thing to discuss.
The main reason I'm here today is because I have an annoying problem:

I'm accessing my network files hosted on a Synology via windows explorer (unc path &/or mapped drive). Since a few days now, I'm unable to open any file as I get the following messages:
Picture: "it looks like you don't have permission to view this file. Check the permissions and try again.
Any other file : "The directory name is invalid."
Open with other program than Windows one also mention permission issue.

Here's what I tried:
Diskcleanup, SFC /Scannow (clean), chkdsk /f /r (clean), Delete all network drives & windows credential for this network, killing all tasks, safe boot, disabling WinDefender, Firewall...

I'm currently using b16251 of W10x64. I had this problem twice with older versions of W10 and the only solution I found at the time was to format and reinstall windows as I'm completely handicapped in this situation.
I can access properly all files of that network on other computer using W10 & W7 so it's definitely linked to this setup.
Not sure it's related to insider preview as I had this problem on Creator Update 1703 and upgraded to preview thinking it will solve the problem...

Can anybody help me fix this please ? Thanks a lot!

:)

 

Desktop not accessible

As of yesterday, when I log on I receive the error message "c:\Users\xxxx\Desktop is not accessible. The directory name is invalid." The pc works fine, but the desktop is unavailable. I've tried to do a system restore, but I get the message, "System Restore
did not complete successfully. Your computer's system files and settings were not changed. Details: System Restore failed while deleting the following file/directory. Path: C:\$MFT\ An unspecified error occurred during System Restore. (0x800700tb)" Any ideas
on how to fix this?

 

Lumia " The Future is Here "

This is a support forum, not a complaints department.

I suggest you directly submit your complaints about hardware to Nokia and software to Microsoft.



Also it often helps to read reviews when switching platforms to make sure it suits your needs. From what you've said the Lumia 820 clearly doesn't suit you.