--- title: "Lookeen Server – central enterprise search for email and files" url: https://lookeen.com/solutions/enterprise-search/lookeen-server lang: en description: "Lookeen Server indexes file servers, Exchange, Microsoft 365 and PST archives centrally in your own data centre. Everyone finds only what they are allowed to see – in the browser, in Outlook or in the Lookeen app." published: 2018-12-21T13:08:00+00:00 modified: 2026-10-23T09:00:00+00:00 --- # Lookeen Server One central index for your company’s email, files and archives – running on your own server. Lookeen Server checks permissions on every search, so people find exactly what they are allowed to see. [Talk to us](https://lookeen.com/contact) [Pricing & editions](https://lookeen.com/pricing) ## All sources, one search box Lookeen Server pulls content from the systems you already run and keeps the index up to date. ### File servers and network drives Shares and local drives of the server, each on its own schedule – from continuous to one-off for closed archives. ### Exchange on-premises Mailboxes, shared mailboxes and public folders via EWS, connected through a dedicated impersonation account. ### Microsoft 365 Exchange Online including online archives, plus OneDrive, OneNote and SharePoint document libraries via Microsoft Graph. ### PST archives Single PST files or whole folders of them, including those of former employees – without opening them in Outlook. ### Almost 100 file formats Office, PDF, LibreOffice, email, images, CAD, archives and more – searchable by content, with preview and highlighted matches. ### Scanned documents Optional text recognition (OCR) makes scanned PDFs and images searchable – locally with Tesseract or through a cloud service of your choice. ## Permissions that travel with the data If someone has no access in Windows or Exchange, they won’t see the result in Lookeen either. ### Rights from the source While indexing, Lookeen Server reads the permissions of every file, email and public folder and stores them in the index. ### In sync with Active Directory Users and groups are synchronised from Active Directory or Entra ID. Anyone removed there loses access in Lookeen too. ### Shared mailboxes and drives Access to shared mailboxes and SharePoint libraries is imported automatically via PowerShell; delegations can also be granted by hand. ## How your people search The server indexes centrally; your people search wherever they are working. ### In the browser Search and preview work in any current browser – nothing to install, also on thin clients and in VDI sessions. ### In the Lookeen app The Windows app opens files on network drives and email in Outlook, and a hotkey brings it up from anywhere. ### On the phone Coming soon: the Lookeen app for iPhone and Android, connected to the server end-to-end encrypted. [Learn more](https://lookeen.com/mobile-app) ### AI across the whole company index With [Lookeen AI](https://lookeen.com/ki) you ask questions in plain language and get answers with verifiable sources – across all the data you are allowed to see. You choose the language model: the one included with Lookeen, your own OpenAI or Anthropic key, or a local model, for example via Ollama or vLLM. AI can be switched off and is off by default. ## Runs in your infrastructure Lookeen Server runs as a Windows service on your network. Index and data stay on drives you own. - **Sign-in:** Single sign-on via Kerberos/NTLM or Windows login; passwords are never stored. - **Transport:** HTTPS through a web server such as IIS acting as reverse proxy. - **Nothing leaves:** User data never leaves the server. The optional update check can be switched off. - **Administration:** Dashboard with index and search history, licence and user management, mass-delete protection and adjustable indexing speed. - **Organisation:** Tags with their own colours and roles let teams and projects sort their results. ## System requirements What the server, the sources and the workstations need for Lookeen Server. | | Recommendation | | --- | --- | | Hardware | 4 cores or more, at least 16 GB RAM, SSD with about 60 GB per million indexed documents | | Server | Windows Server 2012 (64-bit) or later, .NET 4.8, Active Directory | | Sources | Exchange Server 2010 SP2 or later, Exchange Online/Microsoft 365, file and PST storage | | Workplace | A current browser; Windows 10 and 11 (64-bit) for the app, Outlook 2016 or later for the add-in | ## Frequently asked questions Storage location, installation, freshness and trying Lookeen Server. Where is the data stored? Only on the server Lookeen Server is installed on. You choose where the index lives; for encryption at rest, use BitLocker for example. Do employees need to install anything? No. Search runs in the browser. The Lookeen app and the Outlook add-in are optional and can be rolled out via MSI. How current are the results? Lookeen Server indexes continuously. For each source you set how often it is checked and when indexing pauses, for example during working hours. Can I test Lookeen Server first? Yes. [Get in touch](https://lookeen.com/contact) – we set up a trial installation with your own sources. Related: [Enterprise search](https://lookeen.com/solutions/enterprise-search/enterprise-search) · [File server search](https://lookeen.com/use-cases/file-server-search) · [Microsoft 365](https://lookeen.com/use-cases/microsoft-365) · [Search in VDI](https://lookeen.com/solutions/search-in-vdi/desktop-search-in-vdi) ## Try it free, no strings attached Test the full feature set of Lookeen for 14 days – with your own data. [Get started](https://lookeen.com/get-started) [Talk to us](https://lookeen.com/contact)