Investigate
Trace changes, crashes, slowdowns, network trouble, and Windows evidence before choosing a repair.
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Version 2.38.6 · signed Windows release ↗
Praesidium // PC Defense
One connected system
for Windows care.
Monitor. Maintain. Protect.
Diagnostics, maintenance, drivers, cleanup, security, privacy, repair, and recovery share one evidence model—so you can understand the PC before authorizing a change.
Explore the system
PlatformWindows 10 / 11 x64
Operating modelPreview → Review → Approve
CoreFree forever
Premium30 days free · no card requiredThen $79.99 once · no subscription
One connected Windows system
Every tool contributes to the same understanding of the PC.
Praesidium is one application, not a bundle of unrelated utilities. Diagnostics inform maintenance. Maintenance produces activity proof. Safety and recovery stay connected to the actions they protect.
ONE APPLICATIONONE PREMIUM LICENSEONE ACTIVITY RECORDONE RECOVERY MODEL
Connected does not mean indiscriminate. Each feature keeps its own evidence, permission, safety, and confirmation boundaries.
Maintain
Preview updates, cleanup, startup changes, and drive care without opaque maintenance.
Protect
Understand Defender, browser persistence, privacy controls, and ransomware protection.
Recover
Keep restore points, quarantine, deleted-file recovery, and readiness evidence close.
Drivers
Inventory drivers, expose review reasons, check supported sources, and preserve recovery.
Software
Review applications, publishers, categories, leftovers, updates, and explanations.
Storage
Use media-aware optimization and user-scoped large-file or duplicate discovery.
Explain
Translate evidence with local AI while safeguards retain machine authority.
Two detail levels · one engine
Start simple.
Go deeper when useful.
Simple emphasizes guided, plain-English next steps. Advanced exposes denser evidence, controls, sources, and technical context. The deterministic engine and safety model do not change.
Same engine. Same safeguards. Changing views never bypasses preview, review, approval, or recovery.
The evidence model
Honest results.
No health-score theater.
Praesidium separates what Windows reported, what the application inferred, what remains unknown, and what action is actually available.
Read-only investigation stays separate from cleanup, uninstall, security, repair, and recovery changes. Consequential work remains typed, reviewable, confirmable, and recorded.
The current System Health Center shown above consolidates security, recovery, storage, firmware, and maintenance readiness while explaining score basis and confidence.
It recommends a focus without converting optional configuration into an emergency.- Measured readiness
- Individual health checks
- Direct Windows destinations
Twenty current product views
Follow the system from diagnosis through recovery.
Every image comes from Praesidium 2.38.6. Select any image for an accessible full-screen view; captures receive a consistent edge trim for cleaner presentation.
Explore the system
Timeline & reliability
Understand what changed without pretending timing proves cause.
The local Timeline records important system-state metadata. Reliability & Crash Investigator groups Windows records into focused findings while preserving uncertainty and full evidence.
A practical starting point for crashes and unexpected shutdowns—not a manufactured diagnosis.- Local change metadata
- Grouped reliability evidence
- Clear correlation limits
Performance Investigator compares live measurements with the PC's own baseline. Network Health combines adapter, gateway, DNS, HTTPS, proxy, firewall, port, and connection evidence before repair remains a separate choice.
Processes & Network keeps the live programs and endpoints behind symptoms visible.- Personal performance baseline
- Multi-signal diagnosis
- Live process evidence
One-Click Care scans first and requires a second press to approve eligible safe findings. Cleanup shows exact categories and candidates. Startup controls expose supported entries and preserve reversibility.
Fast care does not collapse preview, approval, and execution into one hidden step.- Scan and preview first
- Selected cleanup evidence
- Reversible startup controls
The Uninstaller groups applications by category, protects shared and system components, supports modify or repair paths, and can inspect application-linked leftovers after removal.
Optional local AI explains what a selected application appears to be; it never grants uninstall authority.- Protected-component boundaries
- Publisher and install evidence
- Advisory explanation bubble
Driver Center distinguishes machine-readable searches from official vendor checkers, identifies why a device needs review, and keeps restore and rollback protection within reach.
A vendor website is never misreported as a completed search, and working drivers are not silently replaced.- Explicit source coverage
- Exact review reasons
- Recovery and activity
Drives & storage
Treat SSDs, HDDs, large files, and duplicates as different problems.
Drive optimization selects Windows retrim for detected solid-state media instead of traditional HDD defragmentation. File discovery stays scoped to the drive or folder the user chooses.
Candidates remain reviewable and can move to Praesidium Vault instead of disappearing.- Media-aware optimization
- SHA-256 duplicate matching
- User-scoped discovery
Security & privacy
Surface Windows protection and browser risk without selling fear.
Praesidium exposes Microsoft Defender controls without claiming to replace its maintained engine. Browser and privacy tools inventory local evidence and open verified vendor or Windows destinations for final choices.
Review findings are not malware verdicts, and extensions are never installed silently.- Defender-backed protection
- Persistence review
- Verified destinations
Repair & recovery
Put native Windows repair and recovery behind plain-English guardrails.
Recovery Readiness checks meaningful options. Windows Repair offers typed native paths. Restore points, quarantine, and deleted-file recovery keep warnings and destination safety in view.
Praesidium guides and validates; Windows performs final rollback and file recovery.- Readiness assessment
- Typed repair actions
- Restore and recovery
Explanation & activity proof
Keep explanation advisory and completed work accountable.
Local AI can summarize applications, drivers, files, and measured findings. Notifications, Timeline, and activity records show what was checked without granting model output machine authority.
AI may explain. Typed controls, safeguards, and the person at the PC decide what changes.- Local advisory summaries
- Visible evidence
- Deterministic authority
ADVISORYExplanation is never authorization.
Model output is untrusted text. It cannot execute commands, approve repairs, disable safeguards, or bypass confirmation.
The Praesidium boundary
AI may explain.
It does not inherit control.
Optional local AI can summarize evidence and translate technical terms. Protected operations, confirmation, history, and recovery remain governed by deterministic controls and the person using the PC.
- Model output is untrusted advisory text.
- AI absence never impairs deterministic PC care.
- Protected actions require explicit approval.
- Recovery remains part of the workflow.
Before you install
System requirements
Praesidium is a self-contained 64-bit Windows desktop application. Core works without local AI; optional profiles add memory and storage recommendations.
Build 19045 minimum, or a current supported Windows 11 x64 release.
Required to install and for protected repairs. 1280 × 720 display or higher.
8 GB RAM and a 4+ core Intel or AMD processor are the typical target; 2 logical CPU threads are the tested low-end boundary.
Lite about 2.5 GB. Full about 5.2 GB; 16 GB RAM, 8 logical threads, and 12 GB free recommended. Ollama needs additional storage.
Local AI is optional. Deterministic diagnostics, maintenance, security, and recovery remain available without Ollama or a model.
Customer record
Feedback without manufactured proof.
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Want to test Praesidium through the disclosed complimentary review program?
Simple licensing
Core is free forever. Premium is $79.99 once.
Every installation includes one persistent 30-day Premium trial. After that, keep Core at no cost or activate a perpetual Premium license—no subscription and no automatic renewal. Premium purchases include a 30-day money-back guarantee. Applicable sales tax, VAT, or GST is calculated at checkout.
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