There are different reasons why a search path cannot be accessed.

• The folder does not exist or has been renamed.
• The current user does not have access rights to the folder.
• The folder is located on a network drive that is currently not available.
• The folder is on a portable drive or USB stick that is not plugged in.

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This error code indicates that the root certificate is not trusted on the system. We just recently updated the certificate we used to sign our applications, so it still seems to be the case that this root certificate is not yet up to date.

These certificates are usually being updated and installed online and/or along with Windows updates. These updates might be disabled manually though.

Please check for pending or available Windows updates first.

If this doesn't work, please try to download and install the updated certificates manually. They are issued from GlobalSign and should therefore be considered safe:

Root certificate https://secure.globalsign.com/cacert/codesigningrootr45.crt

Intermediate certificate https://secure.globalsign.com/cacert/gsgccr45evcodesignca2020.crt

Please ensure to install the root certificate to the correct store (root certificates). Having Windows select the store automatically, it might select the wrong store for this certificate.

To install the root certificate, proceed as follows:

1. Download the certificate. If the browser reports that the file could damage the system, confirm this message with "Keep".
   As the certificate comes from a trusted source (GlobalSign), this warning is not relevant in this case.
2. Right-click on file and select "Install certificate" in the context menu.
3. A Windows dialog opens. First select the storage location "Local computer" and "Next".
4. On the following page, select "Save all certificates in the following location" -> Browse -> "Trusted root certification authorities" for this certificate.
5. Click on continue/next until the import process is complete.

Proceed in the same way to install the intermediate certificate, but select the "Intermediate certification authorities" folder in step 4.

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You can choose the NAS as a regular scan target in the scan dialog if it is either mapped to a drive letter or has a UNC path that you can use. It is currently not possible to access a NAS over a https:// address.

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You can use the duplicate search of the file search that is integrated into TreeSize for this use case.

Please open the duplicate search and select both the source directory, as well as the destination directory, as search paths.

In the "Duplicate Search" ribbon, you can choose "Unique files" and use it in combination with the (default) comparison method "File Content". Now, when running a duplicate search, instead of finding all duplicate files, only files that do not have a duplicate file are shown in the result list.

If no files are found, it means every file has a duplicate and this indicates that the copy operation worked fine.

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To grant permissions on the respective site collections to be scanned via TreeSize/SpaceObServer, the PowerShell cmdlet Grant-PnPAzureADAppSitePermission can be used.

1.  Import-Module PnP.Powershell
2. Connect-PnPOnline -Url <SharePointSIteURL> -Interactive
3. Grant-PnPAzureADAppSitePermission -AppId <AzureAppID> -DisplayName <AzureAppName>  -Site < SharePointSiteURL> -Permissions write

The user that is used for granting the permission must be a site collection admin of the respective site collection. The role 'Owner' is not sufficient.

For more information about the used cmdlets please see: https://pnp.github.io/powershell/cmdlets/

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For files, the value of the file itself is taken. For folders, the highest value of all child elements and optionally (this setting is enabled by default) the value of the folder itself is used.

If you do not want TreeSize to use the value of the folder itself, you can enable the option "Include only file dates in folder date calculation" in the "General" options.

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We have a few pages in our manual that describe how to get TreeSize connected to SharePoint:

1. https://manuals.jam-software.de/treesize/EN/scan_targets.html (general description of all scan targets, including SharePoint)
2. https://manuals.jam-software.de/treesize/EN/scantarget.html (description of the dialog that is used to select the scan target)
3. https://manuals.jam-software.de/treesize/EN/azure-ad-configuration.html (describes multi-factor authentication (MFA/2FA))

In the scan dialog, "Server name" is the URL to the SharePoint, "Path" is the optional subpath on your SharePoint you want to scan, "User name" and "Password" are the fields where you put in your credentials. Alternatively, you can log in using a certificate.

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It is unfortunately not possible yet but we plan to implement this in a future release. If you are interested, please consider voting for this feature request on our feature voting platform: https://jam-software.upvoty.com/b/treesize/wildcard-contents-search/

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The default IFilter that Windows uses to handle PDF files is unfortunately not capable of providing the necessary information so TreeSize can't get the data as a result.

To fix this, please install a different IFilter. You can use the free version of PDF-XChange Editor for example as this comes with an IFilter that provides everything TreeSize needs to get all attributes from PDF files.

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You can select the scan root in the left panel (directory tree), right-click it, select "Export Data" -> "Copy list of files" to copy a list of all files inside the scan path to the clipboard.

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