How-to
How to switch IT support provider without downtime
You can change IT provider without losing a single hour, as long as the two agreements overlap. Nearly every switching horror story starts the same way: notice handed in before the new provider had access.
Last reviewed 11 August 2026 · 4 min read
The short version
- Overlap the two agreements - never let the old one lapse before the new one has access
- Find your notice period and renewal date before you speak to anybody
- Know what you own: your domain, your licences, your admin accounts, your documentation
- Move monitoring and backups first, the helpdesk number last
- Close the old provider's access only once you have checked the new cover is working
Where switches actually go wrong
A switch rarely fails because the new provider is not up to it. It fails in the gap – the days when the old provider has stopped caring and the new one cannot yet get in.
Two things create that gap. Handing in notice too early, which starts a clock you cannot pause. And discovering late that something you assumed was yours – the domain, an admin account, the licences – sits in the outgoing provider’s name.
Both are avoidable, and both are avoided by doing things in the right order.
The switch, in order
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1
Read your current agreement before anything else
Find three things: the notice period, the renewal date, and whether it renews automatically. Everything else in this plan is built around those dates. If you are inside an auto-renewal window, you may need to give notice sooner than feels comfortable - but give it after step 4, not before.
Put the renewal date in a calendar the moment you find it.
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2
Establish what you own
Work through your domain name, your Microsoft 365 tenant, your licences, your firewall and your backups, and for each one ask whose name it is registered in and who holds the administrator account. Anything registered to your provider rather than to you is a negotiation, so you want to know now rather than in week three.
Your domain is the one to check first - email depends on it.
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3
Choose the new provider, and agree the start date
Pick your provider and fix a start date that sits comfortably before your current agreement ends. That deliberate overlap is what buys you a switch with no gap in cover. Paying twice for a few weeks is far cheaper than a week with nobody watching your systems.
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4
Ask the new provider to run discovery first
Before anything is switched over, the incoming provider should document what you are running: servers, machines, licences, network kit, backups and where everything lives. Do this while the old agreement is still active, so anything missing can still be asked for.
If a provider offers to take you on without doing this, treat it as a warning.
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5
Give notice, in writing
Now hand in notice, in the form the agreement specifies, and keep a copy. Ask for a written handover date and confirm who the technical contact is on each side. Stay civil - most of what you still need has to come from people who now know you are leaving.
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6
Cut over in the right order
Monitoring and backups move first, so nothing is ever unwatched. Security tooling next. The helpdesk number changes last, once everything behind it is already in place. Tell your team the new number the day before, not the morning of.
Run the old and new monitoring side by side for a few days if you can.
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7
Verify, then close the old access
Check that backups are running and can be restored from, that monitoring alerts are arriving with the new provider, and that no old administrator accounts are still active. Only when all three are confirmed should the outgoing provider's access be removed. Do not skip this because the switch felt smooth.
The handover pack to ask for
- An asset list: every machine, server and piece of network kit, with warranty dates
- Administrator credentials for your domain, your Microsoft 365 tenant and your firewall
- Licence details, and confirmation of whose name each one is registered in
- Network documentation: addresses, VPN settings, how the site is put together
- Backup configuration, and the last verified restore
- Any open tickets, with their history
What an outgoing provider owes you, and what it does not
Your data is yours, and so is anything registered in your name. Documentation written specifically about your systems is normally yours too, and a reasonable provider hands it over without a fuss.
What they do not owe you is their own tooling, their internal scripts or their monitoring platform. Those leave with them, which is part of why the incoming provider needs to install its own before the old cover ends.
Where it gets awkward is licences and domains bought on your behalf but registered to the provider. That is a commercial conversation, and it is far easier to have while you are still a paying customer. Which is the argument for step 2 happening early.
Common questions
Will we have to change our email addresses?
No, provided you own your domain name. Email moves with the domain, not with the provider. If the domain is registered to your current provider, sort that out before anything else - it is the single most disruptive thing to discover late.
How long does a switch take?
For a small business with cloud email and no servers, a couple of weeks of overlap is usually comfortable. Servers, line-of-business applications or an on-site network take longer. Ask your incoming provider for a date-by-date plan rather than a duration.
What if our current provider will not cooperate?
It happens, and it is why the handover pack is requested before notice is given. A competent incoming provider can rebuild most things without help - monitoring, protection and documentation are all replaceable. What is genuinely painful is a domain or a tenant you cannot get control of, which is why that is step 2.
Can we switch part-way through a contract?
Usually only by paying out the remainder, so check the notice and termination clauses first. If you are unhappy but tied in, it is often worth raising the service failures formally, in writing, before assuming you have to wait.
Worried a switch will cost you a day's trading?
Send us your current agreement and a rough list of what you run. We'll map out how a move would actually work, week by week - including whether now is the wrong time.
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