Directory Name Invalid

[iand123]

I have had this issue on two seperate windows VM's now. Upon first install and use the program works fine. if i come back a couple of days later it doesnt work with the below output. A reboot of the machine works fine but as its a production VM i cant always do this in the middle of the day when trying to add certs

Saving Certificate to C:\Users\Administrator\AppData\Roaming\letsencrypt-win-sim
ple\httpsacme-v01.api.letsencrypt.org\www.websiteremoved.net-crt.der
Exception IOException {Data=[], Message="The directory name is invalid.
", InnerException=null, TargetSite=Void WinIOError(Int32, System.String), StackT
race=" at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.__Error.WinIOError()
at System.IO.Path.InternalGetTempFileName(Boolean checkHost)
at LetsEncrypt.ACME.Simple.Program.GetIssuerCertificate(CertificateRequest ce
rtificate, CertificateProvider cp)
at LetsEncrypt.ACME.Simple.Program.GetCertificate(Target binding)
at LetsEncrypt.ACME.Simple.Program.Auto(Target binding)
at LetsEncrypt.ACME.Simple.Plugin.Auto(Target target)
at LetsEncrypt.ACME.Simple.Program.Main(String[] args)", HelpLink=null, Sourc
e="mscorlib", HResult=-2147024629}

When i go to the path mentioned above the file is there. Reproduced in 1.93 and 1.94 beta 5

[iand123]

Forgot to say CMD is running as administrator

[WouterTinus]

I will push a small change to download the temporary file to same place where the final files are stored. Please try the upcoming 1.9.4-beta6 to check if that helps in your case.