The Microsoft Upgrade: Transition Your MCPD Windows Developer 3.5, or Enterprise Application Developer 3.5, Skills to MCPD Windows Developer 4 blueprint is divided into 5 domains, headlined by ADO.NET and Data Access in .NET 4 (20%), Windows Forms Enhancements in .NET Framework 4 (20%), and Windows Communication Foundation (WCF) 4 Updates (25%). The full weighted outline is in the syllabus section above — our materials are revised against it, and your study hours should follow it too.

For the Microsoft Upgrade: Transition Your MCPD Windows Developer 3.5, or Enterprise Application Developer 3.5, Skills to MCPD Windows Developer 4, Microsoft points candidates toward these resources:

• Microsoft Official .NET Framework 4 Training

Official training builds the foundation; deliberate practice builds the result. Pair whichever course you choose with 115 practice questions from TorrentExam and you prepare on both fronts.

The 70-521 exam packs 50-70 questions into 120 minutes. That ratio is the hidden exam-within-the-exam: candidates who never practice under time pressure often know the content and still run out of minutes. Use the TorrentExam Windows engine or online engine in timed mode, and let pacing become a practiced skill rather than an exam-day surprise.

Delivery first: download immediately after payment, with an email copy arriving within one minute. If 2 hours pass with no email, check spam and contact our support team. There is no limit on how many computers you can install the software on.

If you sit the 70-521 exam within 60 days of purchase and do not pass, the TorrentExam money back guarantee covers you: file within 2 days of the exam with a scanned enrollment slip and the official score report (PDF), and the claim is processed within 7 days. The candidate name must match the payer name; the policy excludes exams taken within 3 days of purchase, purchases never used in an actual exam attempt, free materials, and expired orders. If you prefer to keep preparing, exchange the product for two free exam packages of equal value and retain the update service on your original purchase.

You pass the 70-521 exam at 700 (on scale 1000), and official registration costs $150–$165 USD. Keep in mind the fee covers one attempt only — a retake is billed at full price again. The economical path is to self-test first: drill 115 practice questions at TorrentExam in timed mode until your scores clear the passing mark consistently, then register.

Yes — TorrentExam offers a free PDF demo of the 70-521 practice questions, so you can evaluate the expert-designed content and verified answers before paying anything. Once you purchase, 365 days of free updates are included, and if the product expires, the update service renews at a 50% discount from your member zone.

Hold valid MCPD: Windows Developer 3.5 or MCPD: Enterprise Application Developer 3.5 certification

Vendor rules change periodically, so before booking, confirm the current criteria on the official Microsoft exam page.

You can schedule the Microsoft Upgrade: Transition Your MCPD Windows Developer 3.5, or Enterprise Application Developer 3.5, Skills to MCPD Windows Developer 4 through the official channels below:

• Pearson VUE (historical)

One note for scheduling: the 70-521 exam is delivered Proctored onsite at Pearson VUE test centers; retired, no longer available.

The 70-521 exam — full name Upgrade: Transition Your MCPD Windows Developer 3.5, or Enterprise Application Developer 3.5, Skills to MCPD Windows Developer 4 — is Microsoft's certification exam for professionals working with its technologies; passing it awards the MCPD: Windows Developer 4 certification, a credential at the Professional level. It is the kind of vendor-issued proof employers can compare across candidates, which is exactly why it stays in demand. It also leads naturally toward MCTS: .NET Framework 4, Windows Applications, MCTS: .NET Framework 4, Service Communication Applications, MCTS: .NET Framework 4, Data Access.