Server SSL certificate verification failed: issuer is not trusted ,Error Message: Unable to connect to a repository at URL

[jdjadav]

Hello there, I am getting above error when i perform checkout/Update through sharpsvn

Server SSL certificate verification failed: issuer is not trusted ,Error Message: Unable to connect to a repository at URL
at SharpSvn.SvnClientArgs.HandleResult(SvnClientContext client, SvnException error, Object targets)
at SharpSvn.SvnClient.Update(ICollection`1 paths, SvnUpdateArgs args, SvnUpdateResult& result)
at DevDocsAddIn.CommonLibrary.SubVersionHelper.UpdateFileImpl.UpdateFile() in D:\devgit\devdocs\DevDocsWordAddin\DevDocsAddIn.CommonLibrary\SubVersion\SubVersionHelper.UpdateFile.cs:line 60

Please help