Description

When deploying a custom solution to a Sitecore XP instance, installing a package might fail if the package size exceeds 2047 megabytes. An error similar to the following can be found in the logs:

Exception: System.ArgumentOutOfRangeException
Message: Specified argument was out of the range of valid values.
Parameter name: count
Source: System
   at System.IO.Compression.DeflateStream.ValidateParameters(Byte[] array, Int32 offset, Int32 count)
   at System.IO.Compression.DeflateStream.Read(Byte[] array, Int32 offset, Int32 count)
   at Sitecore.Zip.Utils.LimitedReadOnlyStream.Read(Byte[] buffer, Int32 offset, Int32 count)
   at Sitecore.Install.StreamUtil.Copy(Stream from, Stream to, Int32 bufferSize)
   at Sitecore.Install.Zip.PackageReader.Populate(ISink`1 sink)
   at Sitecore.Shell.Applications.Install.Dialogs.InstallPackage.InstallPackageForm.LoadPackage()
   at Sitecore.Shell.Applications.Install.Dialogs.InstallPackage.InstallPackageForm.ActivePageChanging(String page, String& newpage)
   at Sitecore.Web.UI.Pages.WizardForm.set_Active(String value)

Exception: System.IO.IOException
Message: An attempt was made to move the file pointer before the beginning of the file.
Source: mscorlib
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileStream.SeekCore(Int64 offset, SeekOrigin origin)
   at System.IO.FileStream.Seek(Int64 offset, SeekOrigin origin)
   at Sitecore.Zip.ZipReader.d__0.MoveNext()
   at Sitecore.Zip.ZipReader.GetEntry(String entryName)
   at Sitecore.Install.Zip.PackageReader.Populate(ISink`1 sink)
   at Sitecore.Shell.Applications.Install.Dialogs.InstallPackage.InstallPackageForm.LoadPackage()
   at Sitecore.Shell.Applications.Install.Dialogs.InstallPackage.InstallPackageForm.ActivePageChanging(String page, String& newpage)
   at Sitecore.Web.UI.Pages.WizardForm.set_Active(String value)
   at Sitecore.Web.UI.HtmlControls.Button.DoClick(Message message)

Solution

To resolve the issue, upgrade your solution to Sitecore XP 10.1.0 or later.

Alternatively, consider creating multiple smaller packages, each below the maximum allowable size of 2047 MB (1.9 GB), rather than a single large package.