[Solved] Cannot access shared folder

[jalexm]

Hello.

I have 3 identical vms (version 5.2.12 r122591) runing Win10 as guest. Host is Win10 too.
Only one of them is able to access a shared folder (called Host_x) on host but the others cannot.
I'm not running vms simultaneously. Windows says \\vboxsvr exists, but can't connect to Host_x.
Curiously everything was OK some days ago.
Can you help?

Thanks.

[Martin]

If a Windows 10 guest got a bigger Windows Update you may have to reinstall the guest additions inside the guest.

[andyp73]

If that doesn't fix it, we will need to see the VBox.log file from two of the guests - specifically the guest that works and one that fails! zip the log files and post them.

-Andy.

[jalexm]

If a Windows 10 guest got a bigger Windows Update you may have to reinstall the guest additions inside the guest.

Yes, I did it.

[jalexm]

If that doesn't fix it, we will need to see the VBox.log file from two of the guests - specifically the guest that works and one that fails! zip the log files and post them.
-Andy.

Where are log files?

[socratis]

1. Start the VM from cold-boot (not from a paused or saved state) / Observe error / Shutdown the VM (force close it if you have to).
2. With the VM completely shut down (not paused or saved), right-click on the VM in the VirtualBox Manager and select "Show Log".
3. Save only the first "VBox.log", ZIP it and attach it to your response. See the "Upload attachment" tab below the reply form.

[jalexm]

Hi all.
I just solved the problem reinstalling Guest Additions, but this time right clicking VBoxWindowsAdditions.exe and running it as Administrator.
Maybe I have did this in vm that's ok and forget to do it in other two vms.
I want to sincerely thank you for all your answers.

[socratis]

Great, thanks for the feedback. Marking as [Solved].